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1230210312 = 233132138803
BaseRepresentation
bin100100101010011…
…1000010100001000
310011201212011021220
41021110320110020
510004413212222
6322023402040
742325420662
oct11124702410
93151764256
101230210312
11581470241
122a3bb3320
13167b410c6
14b9555532
1573006b5c
hex49538508

1230210312 has 32 divisors (see below), whose sum is σ = 3077933280. Its totient is φ = 409749120.

The previous prime is 1230210307. The next prime is 1230210341. The reversal of 1230210312 is 2130120321.

It is a super-2 number, since 2×12302103122 = 3026834823502274688, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1230210291 and 1230210300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12303 + ... + 51105.

It is an arithmetic number, because the mean of its divisors is an integer number (96185415).

Almost surely, 21230210312 is an apocalyptic number.

1230210312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1230210312 is an abundant number, since it is smaller than the sum of its proper divisors (1847722968).

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

1230210312 is a wasteful number, since it uses less digits than its factorization.

1230210312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40133 (or 40129 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1230210312 is about 35074.3540496472. The cubic root of 1230210312 is about 1071.5023331364.

Adding to 1230210312 its reverse (2130120321), we get a palindrome (3360330633).

The spelling of 1230210312 in words is "one billion, two hundred thirty million, two hundred ten thousand, three hundred twelve".

Divisors: 1 2 3 4 6 8 12 24 1321 2642 3963 5284 7926 10568 15852 31704 38803 77606 116409 155212 232818 310424 465636 931272 51258763 102517526 153776289 205035052 307552578 410070104 615105156 1230210312