13231712042 has 4 divisors (see below), whose sum is σ = 19847568066. Its totient is φ = 6615856020.

The previous prime is 13231712009. The next prime is 13231712059. The reversal of 13231712042 is 24021713231.

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

It can be written as a sum of positive squares in only one way, i.e., 13201780201 + 29931841 = 114899^2 + 5471^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3307928009 + ... + 3307928012.

Almost surely, 2^13231712042 is an apocalyptic number.

13231712042 is a deficient number, since it is larger than the sum of its proper divisors (6615856024).

13231712042 is an equidigital number, since it uses as much as digits as its factorization.

13231712042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6615856023.

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 13231712042 in words is "thirteen billion, two hundred thirty-one million, seven hundred twelve thousand, forty-two".