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312430080 = 2935172393
BaseRepresentation
bin10010100111110…
…100111000000000
3210202220002111110
4102213310320000
51114440230310
651000243320
710512416604
oct2247647000
9722802443
10312430080
111503a4386
1288770540
134c960791
142d6cb504
151c666d20
hex129f4e00

312430080 has 160 divisors (see below), whose sum is σ = 1057994784. Its totient is φ = 78381056.

The previous prime is 312430057. The next prime is 312430081. The reversal of 312430080 is 80034213.

It is a happy number.

312430080 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×3124300802 = 195225109777612800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312430081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129364 + ... + 131756.

Almost surely, 2312430080 is an apocalyptic number.

312430080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312430080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528997392).

312430080 is an abundant number, since it is smaller than the sum of its proper divisors (745564704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312430080 is a wasteful number, since it uses less digits than its factorization.

312430080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436 (or 2420 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 312430080 is about 17675.6917827846. The cubic root of 312430080 is about 678.5537891523.

Adding to 312430080 its reverse (80034213), we get a palindrome (392464293).

The spelling of 312430080 in words is "three hundred twelve million, four hundred thirty thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 32 34 40 48 51 60 64 68 80 85 96 102 120 128 136 160 170 192 204 240 255 256 272 320 340 384 408 480 510 512 544 640 680 768 816 960 1020 1088 1280 1360 1536 1632 1920 2040 2176 2393 2560 2720 3264 3840 4080 4352 4786 5440 6528 7179 7680 8160 8704 9572 10880 11965 13056 14358 16320 19144 21760 23930 26112 28716 32640 35895 38288 40681 43520 47860 57432 65280 71790 76576 81362 95720 114864 122043 130560 143580 153152 162724 191440 203405 229728 244086 287160 306304 325448 382880 406810 459456 488172 574320 610215 612608 650896 765760 813620 918912 976344 1148640 1220430 1225216 1301792 1531520 1627240 1837824 1952688 2297280 2440860 2603584 3063040 3254480 3675648 3905376 4594560 4881720 5207168 6126080 6508960 7810752 9189120 9763440 10414336 13017920 15621504 18378240 19526880 20828672 26035840 31243008 39053760 52071680 62486016 78107520 104143360 156215040 312430080