315043681 has 16 divisors (see below), whose sum is σ = 325987200. Its totient is φ = 304363008.

The previous prime is 315043621. The next prime is 315043721. The reversal of 315043681 is 186340513.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315043681 is a prime.

It is a super-2 number, since 2×315043681² = 198505041876059522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315043621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 877380 + ... + 877738.

It is an arithmetic number, because the mean of its divisors is an integer number (20374200).

Almost surely, 2^315043681 is an apocalyptic number.

It is an amenable number.

315043681 is a deficient number, since it is larger than the sum of its proper divisors (10943519).

315043681 is a wasteful number, since it uses less digits than its factorization.

315043681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 315043681 is about 17749.4698794077. The cubic root of 315043681 is about 680.4406608875.

The spelling of 315043681 in words is "three hundred fifteen million, forty-three thousand, six hundred eighty-one".