157317312 has 56 divisors (see below), whose sum is σ = 429678592. Its totient is φ = 50745600.

The previous prime is 157317311. The next prime is 157317367. The reversal of 157317312 is 213713751.

It is a self number, because there is not a number n which added to its sum of digits gives 157317312.

It is not an unprimeable number, because it can be changed into a prime (157317311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7264 + ... + 19167.

It is an arithmetic number, because the mean of its divisors is an integer number (7672832).

Almost surely, 2^157317312 is an apocalyptic number.

157317312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

157317312 is an abundant number, since it is smaller than the sum of its proper divisors (272361280).

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

157317312 is a wasteful number, since it uses less digits than its factorization.

157317312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26477 (or 26467 counting only the distinct ones).

The product of its digits is 4410, while the sum is 30.

The square root of 157317312 is about 12542.6198220308. The cubic root of 157317312 is about 539.8322661484.

The spelling of 157317312 in words is "one hundred fifty-seven million, three hundred seventeen thousand, three hundred twelve".