312153812 has 18 divisors (see below), whose sum is σ = 576536058. Its totient is φ = 147861648.

The previous prime is 312153797. The next prime is 312153841. The reversal of 312153812 is 218351213.

312153812 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 227587396 + 84566416 = 15086^2 + 9196^2 .

It is a super-2 number, since 2×312153812² = 194880004692262688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106643 + ... + 109530.

It is an arithmetic number, because the mean of its divisors is an integer number (32029781).

Almost surely, 2^312153812 is an apocalyptic number.

It is an amenable number.

312153812 is a deficient number, since it is larger than the sum of its proper divisors (264382246).

312153812 is a wasteful number, since it uses less digits than its factorization.

312153812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216215 (or 216194 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 312153812 is about 17667.8751410576. The cubic root of 312153812 is about 678.3537252102.

The spelling of 312153812 in words is "three hundred twelve million, one hundred fifty-three thousand, eight hundred twelve".