131331019979 has 2 divisors, whose sum is σ = 131331019980. Its totient is φ = 131331019978.

The previous prime is 131331019961. The next prime is 131331020011. The reversal of 131331019979 is 979910133131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131331019979 - 2¹² = 131331015883 is a prime.

It is not a weakly prime, because it can be changed into another prime (131331012979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65665509989 + 65665509990.

It is an arithmetic number, because the mean of its divisors is an integer number (65665509990).

Almost surely, 2^131331019979 is an apocalyptic number.

131331019979 is a deficient number, since it is larger than the sum of its proper divisors (1).

131331019979 is an equidigital number, since it uses as much as digits as its factorization.

131331019979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137781, while the sum is 47.

The spelling of 131331019979 in words is "one hundred thirty-one billion, three hundred thirty-one million, nineteen thousand, nine hundred seventy-nine".