12517631 has 8 divisors (see below), whose sum is σ = 14345760. Its totient is φ = 10699488.

The previous prime is 12517613. The next prime is 12517667. The reversal of 12517631 is 13671521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12517631 is a prime.

It is a super-2 number, since 2×12517631² = 313382171704322, 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 12517631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12517691) 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, 425 + ... + 5021.

It is an arithmetic number, because the mean of its divisors is an integer number (1793220).

Almost surely, 2^12517631 is an apocalyptic number.

12517631 is a deficient number, since it is larger than the sum of its proper divisors (1828129).

12517631 is an equidigital number, since it uses as much as digits as its factorization.

12517631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4993.

The product of its digits is 1260, while the sum is 26.

The square root of 12517631 is about 3538.0264272614. The cubic root of 12517631 is about 232.1885048898.

The spelling of 12517631 in words is "twelve million, five hundred seventeen thousand, six hundred thirty-one".