316040731 has 2 divisors, whose sum is σ = 316040732. Its totient is φ = 316040730.

The previous prime is 316040719. The next prime is 316040741. The reversal of 316040731 is 137040613.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 316040731 - 2¹¹ = 316038683 is a prime.

It is a super-2 number, since 2×316040731² = 199763487302028722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 316040696 and 316040705.

It is not a weakly prime, because it can be changed into another prime (316040701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158020365 + 158020366.

It is an arithmetic number, because the mean of its divisors is an integer number (158020366).

Almost surely, 2^316040731 is an apocalyptic number.

316040731 is the 11244-th centered pentagonal number.

316040731 is a deficient number, since it is larger than the sum of its proper divisors (1).

316040731 is an equidigital number, since it uses as much as digits as its factorization.

316040731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 316040731 is about 17777.5344465986. The cubic root of 316040731 is about 681.1577243253.

The spelling of 316040731 in words is "three hundred sixteen million, forty thousand, seven hundred thirty-one".