316290869 has 2 divisors, whose sum is σ = 316290870. Its totient is φ = 316290868.

The previous prime is 316290841. The next prime is 316290881. The reversal of 316290869 is 968092613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 306600100 + 9690769 = 17510^2 + 3113^2 .

It is a cyclic number.

It is not a de Polignac number, because 316290869 - 2²⁰ = 315242293 is a prime.

It is a super-2 number, since 2×316290869² = 200079827625550322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316290809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158145434 + 158145435.

It is an arithmetic number, because the mean of its divisors is an integer number (158145435).

Almost surely, 2^316290869 is an apocalyptic number.

It is an amenable number.

316290869 is a deficient number, since it is larger than the sum of its proper divisors (1).

316290869 is an equidigital number, since it uses as much as digits as its factorization.

316290869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 316290869 is about 17784.5682826432. The cubic root of 316290869 is about 681.3373831293.

The spelling of 316290869 in words is "three hundred sixteen million, two hundred ninety thousand, eight hundred sixty-nine".