765590131 has 2 divisors, whose sum is σ = 765590132. Its totient is φ = 765590130.

The previous prime is 765590093. The next prime is 765590143. The reversal of 765590131 is 131095567.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 765590131 - 2¹⁵ = 765557363 is a prime.

It is a super-2 number, since 2×765590131² = 1172256497369194322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (765590831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382795065 + 382795066.

It is an arithmetic number, because the mean of its divisors is an integer number (382795066).

Almost surely, 2^765590131 is an apocalyptic number.

765590131 is a deficient number, since it is larger than the sum of its proper divisors (1).

765590131 is an equidigital number, since it uses as much as digits as its factorization.

765590131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 765590131 is about 27669.2994309578. The cubic root of 765590131 is about 914.8125392589.

The spelling of 765590131 in words is "seven hundred sixty-five million, five hundred ninety thousand, one hundred thirty-one".