765345131 has 2 divisors, whose sum is σ = 765345132. Its totient is φ = 765345130.

The previous prime is 765345107. The next prime is 765345149. The reversal of 765345131 is 131543567.

It is a strong prime.

It is an emirp because it is prime and its reverse (131543567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 765345131 - 2¹⁴ = 765328747 is a prime.

It is a super-2 number, since 2×765345131² = 1171506339090814322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 765345091 and 765345100.

It is not a weakly prime, because it can be changed into another prime (765345331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382672565 + 382672566.

It is an arithmetic number, because the mean of its divisors is an integer number (382672566).

Almost surely, 2^765345131 is an apocalyptic number.

765345131 is a deficient number, since it is larger than the sum of its proper divisors (1).

765345131 is an equidigital number, since it uses as much as digits as its factorization.

765345131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 35.

The square root of 765345131 is about 27664.8717871600. The cubic root of 765345131 is about 914.7149443991.

Adding to 765345131 its reverse (131543567), we get a palindrome (896888698).

The spelling of 765345131 in words is "seven hundred sixty-five million, three hundred forty-five thousand, one hundred thirty-one".