765131316 has 12 divisors (see below), whose sum is σ = 1785306432. Its totient is φ = 255043768.

The previous prime is 765131281. The next prime is 765131321. The reversal of 765131316 is 613131567.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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, 31880460 + ... + 31880483.

It is an arithmetic number, because the mean of its divisors is an integer number (148775536).

Almost surely, 2^765131316 is an apocalyptic number.

It is an amenable number.

765131316 is an abundant number, since it is smaller than the sum of its proper divisors (1020175116).

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

765131316 is a wasteful number, since it uses less digits than its factorization.

765131316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63760950 (or 63760948 counting only the distinct ones).

The product of its digits is 11340, while the sum is 33.

The square root of 765131316 is about 27661.0071400157. The cubic root of 765131316 is about 914.6297549493.

The spelling of 765131316 in words is "seven hundred sixty-five million, one hundred thirty-one thousand, three hundred sixteen".