316222631 has 2 divisors, whose sum is σ = 316222632. Its totient is φ = 316222630.

The previous prime is 316222589. The next prime is 316222651. The reversal of 316222631 is 136222613.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316222631 is a prime.

It is a super-2 number, since 2×316222631² = 199993504713124322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 316222631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316222651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158111315 + 158111316.

It is an arithmetic number, because the mean of its divisors is an integer number (158111316).

Almost surely, 2^316222631 is an apocalyptic number.

316222631 is a deficient number, since it is larger than the sum of its proper divisors (1).

316222631 is an equidigital number, since it uses as much as digits as its factorization.

316222631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 316222631 is about 17782.6497181944. The cubic root of 316222631 is about 681.2883813519.

The spelling of 316222631 in words is "three hundred sixteen million, two hundred twenty-two thousand, six hundred thirty-one".