131043232139 has 4 divisors (see below), whose sum is σ = 131044233960. Its totient is φ = 131042230320.

The previous prime is 131043232109. The next prime is 131043232141. The reversal of 131043232139 is 931232340131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131043232139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131043232109) 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, 268874 + ... + 578255.

It is an arithmetic number, because the mean of its divisors is an integer number (32761058490).

Almost surely, 2^131043232139 is an apocalyptic number.

131043232139 is a deficient number, since it is larger than the sum of its proper divisors (1001821).

131043232139 is an equidigital number, since it uses as much as digits as its factorization.

131043232139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001820.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 131043232139 in words is "one hundred thirty-one billion, forty-three million, two hundred thirty-two thousand, one hundred thirty-nine".