12863631 has 12 divisors (see below), whose sum is σ = 18853016. Its totient is φ = 7795920.

The previous prime is 12863623. The next prime is 12863633. The reversal of 12863631 is 13636821.

It is not a de Polignac number, because 12863631 - 2³ = 12863623 is a prime.

It is a super-2 number, since 2×12863631² = 330946005008322, 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 (12863633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17356 + ... + 18081.

Almost surely, 2^12863631 is an apocalyptic number.

12863631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12863631 is a deficient number, since it is larger than the sum of its proper divisors (5989385).

12863631 is a wasteful number, since it uses less digits than its factorization.

12863631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35462 (or 35451 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 12863631 is about 3586.5904421888. The cubic root of 12863631 is about 234.3083997077.

The spelling of 12863631 in words is "twelve million, eight hundred sixty-three thousand, six hundred thirty-one".