12531100523 has 4 divisors (see below), whose sum is σ = 12648213720. Its totient is φ = 12413987328.

The previous prime is 12531100507. The next prime is 12531100553. The reversal of 12531100523 is 32500113521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12531100523 - 2⁴ = 12531100507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12531100553) 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, 58556438 + ... + 58556651.

It is an arithmetic number, because the mean of its divisors is an integer number (3162053430).

Almost surely, 2^12531100523 is an apocalyptic number.

12531100523 is a deficient number, since it is larger than the sum of its proper divisors (117113197).

12531100523 is a wasteful number, since it uses less digits than its factorization.

12531100523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117113196.

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 12531100523 in words is "twelve billion, five hundred thirty-one million, one hundred thousand, five hundred twenty-three".