316131623 has 2 divisors, whose sum is σ = 316131624. Its totient is φ = 316131622.

The previous prime is 316131611. The next prime is 316131679. The reversal of 316131623 is 326131613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 316131623 - 2¹⁰ = 316130599 is a prime.

It is a super-2 number, since 2×316131623² = 199878406121228258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 316131592 and 316131601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316131223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158065811 + 158065812.

It is an arithmetic number, because the mean of its divisors is an integer number (158065812).

Almost surely, 2^316131623 is an apocalyptic number.

316131623 is a deficient number, since it is larger than the sum of its proper divisors (1).

316131623 is an equidigital number, since it uses as much as digits as its factorization.

316131623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 26.

The square root of 316131623 is about 17780.0906353145. The cubic root of 316131623 is about 681.2230174427.

The spelling of 316131623 in words is "three hundred sixteen million, one hundred thirty-one thousand, six hundred twenty-three".