12631230136 has 32 divisors (see below), whose sum is σ = 27138384000. Its totient is φ = 5399091936.

The previous prime is 12631230107. The next prime is 12631230149. The reversal of 12631230136 is 63103213621.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276346 + ... + 318793.

It is an arithmetic number, because the mean of its divisors is an integer number (848074500).

Almost surely, 2^12631230136 is an apocalyptic number.

It is an amenable number.

12631230136 is an abundant number, since it is smaller than the sum of its proper divisors (14507153864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12631230136 is a wasteful number, since it uses less digits than its factorization.

12631230136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595531 (or 595527 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 12631230136 its reverse (63103213621), we get a palindrome (75734443757).

The spelling of 12631230136 in words is "twelve billion, six hundred thirty-one million, two hundred thirty thousand, one hundred thirty-six".