264513631 has 2 divisors, whose sum is σ = 264513632. Its totient is φ = 264513630.

The previous prime is 264513617. The next prime is 264513701. The reversal of 264513631 is 136315462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264513631 - 2⁷ = 264513503 is a prime.

It is a super-2 number, since 2×264513631² = 139934921969608322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 264513593 and 264513602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264513131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132256815 + 132256816.

It is an arithmetic number, because the mean of its divisors is an integer number (132256816).

Almost surely, 2^264513631 is an apocalyptic number.

264513631 is a deficient number, since it is larger than the sum of its proper divisors (1).

264513631 is an equidigital number, since it uses as much as digits as its factorization.

264513631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 264513631 is about 16263.8750302626. The cubic root of 264513631 is about 641.9226290756.

The spelling of 264513631 in words is "two hundred sixty-four million, five hundred thirteen thousand, six hundred thirty-one".