12765331 has 2 divisors, whose sum is σ = 12765332. Its totient is φ = 12765330.

The previous prime is 12765323. The next prime is 12765349. The reversal of 12765331 is 13356721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12765331 - 2³ = 12765323 is a prime.

It is a super-2 number, since 2×12765331² = 325907351079122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12765331.

It is not a weakly prime, because it can be changed into another prime (12765301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6382665 + 6382666.

It is an arithmetic number, because the mean of its divisors is an integer number (6382666).

Almost surely, 2^12765331 is an apocalyptic number.

12765331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12765331 is an equidigital number, since it uses as much as digits as its factorization.

12765331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 28.

The square root of 12765331 is about 3572.8603387202. The cubic root of 12765331 is about 233.7100348233.

The spelling of 12765331 in words is "twelve million, seven hundred sixty-five thousand, three hundred thirty-one".