616313531 has 2 divisors, whose sum is σ = 616313532. Its totient is φ = 616313530.

The previous prime is 616313471. The next prime is 616313557. The reversal of 616313531 is 135313616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616313531 - 2¹⁴ = 616297147 is a prime.

It is a super-2 number, since 2×616313531² = 759684736987375922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 616313494 and 616313503.

It is not a weakly prime, because it can be changed into another prime (616313591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308156765 + 308156766.

It is an arithmetic number, because the mean of its divisors is an integer number (308156766).

Almost surely, 2^616313531 is an apocalyptic number.

616313531 is a deficient number, since it is larger than the sum of its proper divisors (1).

616313531 is an equidigital number, since it uses as much as digits as its factorization.

616313531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 29.

The square root of 616313531 is about 24825.6627504685. The cubic root of 616313531 is about 851.0085058408.

The spelling of 616313531 in words is "six hundred sixteen million, three hundred thirteen thousand, five hundred thirty-one".