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312313200 = 243522331117
BaseRepresentation
bin10010100111011…
…000010101110000
3210202200011011120
4102213120111300
51114423010300
650553542240
710511422053
oct2247302560
9722604146
10312313200
11150324591
1288714980
134c91c514
142d69aa9a
151c6423a0
hex129d8570

312313200 has 120 divisors (see below), whose sum is σ = 1005636528. Its totient is φ = 82851840.

The previous prime is 312313181. The next prime is 312313223. The reversal of 312313200 is 2313213.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 312313200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 279042 + ... + 280158.

Almost surely, 2312313200 is an apocalyptic number.

312313200 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 312313200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502818264).

312313200 is an abundant number, since it is smaller than the sum of its proper divisors (693323328).

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

312313200 is a wasteful number, since it uses less digits than its factorization.

312313200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371 (or 1360 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 312313200 is about 17672.3852379921. The cubic root of 312313200 is about 678.4691630084.

Adding to 312313200 its reverse (2313213), we get a palindrome (314626413).

It can be divided in two parts, 3 and 12313200, that added together give a triangular number (12313203 = T4962).

The spelling of 312313200 in words is "three hundred twelve million, three hundred thirteen thousand, two hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 40 48 50 60 75 80 100 120 150 200 233 240 300 400 466 600 699 932 1117 1165 1200 1398 1864 2234 2330 2796 3351 3495 3728 4468 4660 5585 5592 5825 6702 6990 8936 9320 11170 11184 11650 13404 13980 16755 17475 17872 18640 22340 23300 26808 27925 27960 33510 34950 44680 46600 53616 55850 55920 67020 69900 83775 89360 93200 111700 134040 139800 167550 223400 260261 268080 279600 335100 446800 520522 670200 780783 1041044 1301305 1340400 1561566 2082088 2602610 3123132 3903915 4164176 5205220 6246264 6506525 7807830 10410440 12492528 13013050 15615660 19519575 20820880 26026100 31231320 39039150 52052200 62462640 78078300 104104400 156156600 312313200