12937631 has 4 divisors (see below), whose sum is σ = 14785872. Its totient is φ = 11089392.

The previous prime is 12937621. The next prime is 12937649. The reversal of 12937631 is 13673921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12937631 - 2²² = 8743327 is a prime.

It is a super-2 number, since 2×12937631² = 334764591784322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12937601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924110 + ... + 924123.

It is an arithmetic number, because the mean of its divisors is an integer number (3696468).

Almost surely, 2^12937631 is an apocalyptic number.

12937631 is a deficient number, since it is larger than the sum of its proper divisors (1848241).

12937631 is an equidigital number, since it uses as much as digits as its factorization.

12937631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848240.

The product of its digits is 6804, while the sum is 32.

The square root of 12937631 is about 3596.8918526973. The cubic root of 12937631 is about 234.7568391713.

The spelling of 12937631 in words is "twelve million, nine hundred thirty-seven thousand, six hundred thirty-one".