12631931 has 8 divisors (see below), whose sum is σ = 13725600. Its totient is φ = 11555712.

The previous prime is 12631919. The next prime is 12631943. The reversal of 12631931 is 13913621.

It is an interprime number because it is at equal distance from previous prime (12631919) and next prime (12631943).

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

It is a cyclic number.

It is not a de Polignac number, because 12631931 - 2¹⁸ = 12369787 is a prime.

It is a super-2 number, since 2×12631931² = 319131361577522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12631931.

It is not an unprimeable number, because it can be changed into a prime (12631951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2831 + ... + 5768.

It is an arithmetic number, because the mean of its divisors is an integer number (1715700).

Almost surely, 2^12631931 is an apocalyptic number.

12631931 is a deficient number, since it is larger than the sum of its proper divisors (1093669).

12631931 is a wasteful number, since it uses less digits than its factorization.

12631931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8725.

The product of its digits is 972, while the sum is 26.

The square root of 12631931 is about 3554.1427939800. The cubic root of 12631931 is about 232.8930784634.

The spelling of 12631931 in words is "twelve million, six hundred thirty-one thousand, nine hundred thirty-one".