12013002131 has 4 divisors (see below), whose sum is σ = 12937079232. Its totient is φ = 11088925032.

The previous prime is 12013002059. The next prime is 12013002163. The reversal of 12013002131 is 13120031021.

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 12013002131 - 2²² = 12008807827 is a prime.

It is a super-2 number, since 2×12013002131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12013002431) 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, 462038531 + ... + 462038556.

It is an arithmetic number, because the mean of its divisors is an integer number (3234269808).

Almost surely, 2^12013002131 is an apocalyptic number.

12013002131 is a deficient number, since it is larger than the sum of its proper divisors (924077101).

12013002131 is an equidigital number, since it uses as much as digits as its factorization.

12013002131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924077100.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 12013002131 its reverse (13120031021), we get a palindrome (25133033152).

The spelling of 12013002131 in words is "twelve billion, thirteen million, two thousand, one hundred thirty-one".