12965631 has 8 divisors (see below), whose sum is σ = 19757184. Its totient is φ = 7408920.

The previous prime is 12965627. The next prime is 12965633. The reversal of 12965631 is 13656921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12965631 - 2² = 12965627 is a prime.

It is a super-2 number, since 2×12965631² = 336215174456322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12965592 and 12965601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12965633) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 308685 + ... + 308726.

It is an arithmetic number, because the mean of its divisors is an integer number (2469648).

Almost surely, 2^12965631 is an apocalyptic number.

12965631 is a deficient number, since it is larger than the sum of its proper divisors (6791553).

12965631 is an equidigital number, since it uses as much as digits as its factorization.

12965631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617421.

The product of its digits is 9720, while the sum is 33.

The square root of 12965631 is about 3600.7819983998. The cubic root of 12965631 is about 234.9260730191.

The spelling of 12965631 in words is "twelve million, nine hundred sixty-five thousand, six hundred thirty-one".