12131332013 has 4 divisors (see below), whose sum is σ = 12131552640. Its totient is φ = 12131111388.

The previous prime is 12131332007. The next prime is 12131332061. The reversal of 12131332013 is 31023313121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12131332013 - 2¹⁴ = 12131315629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131332513) 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, 45956 + ... + 162402.

It is an arithmetic number, because the mean of its divisors is an integer number (3032888160).

Almost surely, 2^12131332013 is an apocalyptic number.

It is an amenable number.

12131332013 is a deficient number, since it is larger than the sum of its proper divisors (220627).

12131332013 is a wasteful number, since it uses less digits than its factorization.

12131332013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220626.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 12131332013 its reverse (31023313121), we get a palindrome (43154645134).

The spelling of 12131332013 in words is "twelve billion, one hundred thirty-one million, three hundred thirty-two thousand, thirteen".