12631813139 has 4 divisors (see below), whose sum is σ = 13780159800. Its totient is φ = 11483466480.

The previous prime is 12631813109. The next prime is 12631813169. The reversal of 12631813139 is 93131813621.

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

It is an interprime number because it is at equal distance from previous prime (12631813109) and next prime (12631813169).

It is a cyclic number.

It is not a de Polignac number, because 12631813139 - 2²⁰ = 12630764563 is a prime.

It is a super-2 number, since 2×12631813139² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12631813109) 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, 574173314 + ... + 574173335.

It is an arithmetic number, because the mean of its divisors is an integer number (3445039950).

Almost surely, 2^12631813139 is an apocalyptic number.

12631813139 is a deficient number, since it is larger than the sum of its proper divisors (1148346661).

12631813139 is a wasteful number, since it uses less digits than its factorization.

12631813139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148346660.

The product of its digits is 23328, while the sum is 38.

The spelling of 12631813139 in words is "twelve billion, six hundred thirty-one million, eight hundred thirteen thousand, one hundred thirty-nine".