12631323522 has 16 divisors (see below), whose sum is σ = 25372967040. Its totient is φ = 4192054512.

The previous prime is 12631323503. The next prime is 12631323547. The reversal of 12631323522 is 22532313621.

It is a self number, because there is not a number n which added to its sum of digits gives 12631323522.

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, 4595178 + ... + 4597925.

It is an arithmetic number, because the mean of its divisors is an integer number (1585810440).

Almost surely, 2^12631323522 is an apocalyptic number.

12631323522 is an abundant number, since it is smaller than the sum of its proper divisors (12741643518).

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

12631323522 is a wasteful number, since it uses less digits than its factorization.

12631323522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9193337.

The product of its digits is 12960, while the sum is 30.

Subtracting 12631323522 from its reverse (22532313621), we obtain a palindrome (9900990099).

The spelling of 12631323522 in words is "twelve billion, six hundred thirty-one million, three hundred twenty-three thousand, five hundred twenty-two".