316521862402 has 8 divisors (see below), whose sum is σ = 475174209276. Its totient is φ = 158130459312.

The previous prime is 316521862313. The next prime is 316521862403. The reversal of 316521862402 is 204268125613.

It can be written as a sum of positive squares in 2 ways, for example, as 302729943681 + 13791918721 = 550209^2 + 117439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (316521862403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65232913 + ... + 65237764.

Almost surely, 2^316521862402 is an apocalyptic number.

316521862402 is a deficient number, since it is larger than the sum of its proper divisors (158652346874).

316521862402 is a wasteful number, since it uses less digits than its factorization.

316521862402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130471892.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 316521862402 in words is "three hundred sixteen billion, five hundred twenty-one million, eight hundred sixty-two thousand, four hundred two".