765741331 has 2 divisors, whose sum is σ = 765741332. Its totient is φ = 765741330.

The previous prime is 765741329. The next prime is 765741337. The reversal of 765741331 is 133147567.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 765741331 - 2¹ = 765741329 is a prime.

It is a super-3 number, since 3×765741331³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 765741329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (765741337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382870665 + 382870666.

It is an arithmetic number, because the mean of its divisors is an integer number (382870666).

Almost surely, 2^765741331 is an apocalyptic number.

765741331 is a deficient number, since it is larger than the sum of its proper divisors (1).

765741331 is an equidigital number, since it uses as much as digits as its factorization.

765741331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 37.

The square root of 765741331 is about 27672.0315661861. The cubic root of 765741331 is about 914.8727588401.

Adding to 765741331 its reverse (133147567), we get a palindrome (898888898).

The spelling of 765741331 in words is "seven hundred sixty-five million, seven hundred forty-one thousand, three hundred thirty-one".