264440313 has 12 divisors (see below), whose sum is σ = 383685120. Its totient is φ = 175501656.

The previous prime is 264440311. The next prime is 264440317. The reversal of 264440313 is 313044462.

264440313 is a `hidden beast` number, since 2 + 644 + 4 + 0 + 3 + 13 = 666.

It is not a de Polignac number, because 264440313 - 2¹ = 264440311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (264440311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63873 + ... + 67886.

It is an arithmetic number, because the mean of its divisors is an integer number (31973760).

Almost surely, 2^264440313 is an apocalyptic number.

It is an amenable number.

264440313 is a deficient number, since it is larger than the sum of its proper divisors (119244807).

264440313 is a wasteful number, since it uses less digits than its factorization.

264440313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131988 (or 131985 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 264440313 is about 16261.6208601726. The cubic root of 264440313 is about 641.8633141331.

Adding to 264440313 its reverse (313044462), we get a palindrome (577484775).

The spelling of 264440313 in words is "two hundred sixty-four million, four hundred forty thousand, three hundred thirteen".