731195313264 has 120 divisors (see below), whose sum is σ = 2319727934160. Its totient is φ = 213141943296.

The previous prime is 731195313263. The next prime is 731195313287. The reversal of 731195313264 is 462313591137.

731195313264 is a `hidden beast` number, since 7 + 311 + 9 + 5 + 3 + 1 + 326 + 4 = 666.

It is a super-2 number, since 2×731195313264² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731195313263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10243269 + ... + 10314404.

It is an arithmetic number, because the mean of its divisors is an integer number (19331066118).

Almost surely, 2^731195313264 is an apocalyptic number.

It is an amenable number.

731195313264 is an abundant number, since it is smaller than the sum of its proper divisors (1588532620896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

731195313264 is a wasteful number, since it uses less digits than its factorization.

731195313264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20557719 (or 20557710 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The spelling of 731195313264 in words is "seven hundred thirty-one billion, one hundred ninety-five million, three hundred thirteen thousand, two hundred sixty-four".