12523501131 has 4 divisors (see below), whose sum is σ = 16698001512. Its totient is φ = 8349000752.

The previous prime is 12523501097. The next prime is 12523501147. The reversal of 12523501131 is 13110532521.

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 12523501131 - 2²³ = 12515112523 is a prime.

It is a super-2 number, since 2×12523501131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12523501831) 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, 2087250186 + ... + 2087250191.

It is an arithmetic number, because the mean of its divisors is an integer number (4174500378).

Almost surely, 2^12523501131 is an apocalyptic number.

12523501131 is a deficient number, since it is larger than the sum of its proper divisors (4174500381).

12523501131 is an equidigital number, since it uses as much as digits as its factorization.

12523501131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4174500380.

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 12523501131 in words is "twelve billion, five hundred twenty-three million, five hundred one thousand, one hundred thirty-one".