315086969 has 2 divisors, whose sum is σ = 315086970. Its totient is φ = 315086968.

The previous prime is 315086957. The next prime is 315086983. The reversal of 315086969 is 969680513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194965369 + 120121600 = 13963^2 + 10960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315086969 is a prime.

It is a super-2 number, since 2×315086969² = 198559596067213922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (315086939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157543484 + 157543485.

It is an arithmetic number, because the mean of its divisors is an integer number (157543485).

Almost surely, 2^315086969 is an apocalyptic number.

It is an amenable number.

315086969 is a deficient number, since it is larger than the sum of its proper divisors (1).

315086969 is an equidigital number, since it uses as much as digits as its factorization.

315086969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 315086969 is about 17750.6892542233. The cubic root of 315086969 is about 680.4718243611.

The spelling of 315086969 in words is "three hundred fifteen million, eighty-six thousand, nine hundred sixty-nine".