264630931 has 4 divisors (see below), whose sum is σ = 264763512. Its totient is φ = 264498352.

The previous prime is 264630929. The next prime is 264630937. The reversal of 264630931 is 139036462.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 139036462 = 2 ⋅69518231.

It is a cyclic number.

It is not a de Polignac number, because 264630931 - 2¹ = 264630929 is a prime.

It is a super-2 number, since 2×264630931² = 140059059283853522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264630937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63250 + ... + 67303.

It is an arithmetic number, because the mean of its divisors is an integer number (66190878).

Almost surely, 2^264630931 is an apocalyptic number.

264630931 is a deficient number, since it is larger than the sum of its proper divisors (132581).

264630931 is a wasteful number, since it uses less digits than its factorization.

264630931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132580.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 264630931 is about 16267.4807822232. The cubic root of 264630931 is about 642.0175030732.

The spelling of 264630931 in words is "two hundred sixty-four million, six hundred thirty thousand, nine hundred thirty-one".