312157672 has 32 divisors (see below), whose sum is σ = 630244800. Its totient is φ = 144404224.

The previous prime is 312157663. The next prime is 312157739. The reversal of 312157672 is 276751213.

312157672 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11428 + ... + 27475.

It is an arithmetic number, because the mean of its divisors is an integer number (19695150).

Almost surely, 2^312157672 is an apocalyptic number.

It is an amenable number.

312157672 is an abundant number, since it is smaller than the sum of its proper divisors (318087128).

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

312157672 is a wasteful number, since it uses less digits than its factorization.

312157672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38985 (or 38981 counting only the distinct ones).

The product of its digits is 17640, while the sum is 34.

The square root of 312157672 is about 17667.9843785306. The cubic root of 312157672 is about 678.3565213046.

The spelling of 312157672 in words is "three hundred twelve million, one hundred fifty-seven thousand, six hundred seventy-two".