231572262139 has 2 divisors, whose sum is σ = 231572262140. Its totient is φ = 231572262138.

The previous prime is 231572262133. The next prime is 231572262149. The reversal of 231572262139 is 931262275132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231572262139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231572262095 and 231572262104.

It is not a weakly prime, because it can be changed into another prime (231572262133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115786131069 + 115786131070.

It is an arithmetic number, because the mean of its divisors is an integer number (115786131070).

Almost surely, 2^231572262139 is an apocalyptic number.

231572262139 is a deficient number, since it is larger than the sum of its proper divisors (1).

231572262139 is an equidigital number, since it uses as much as digits as its factorization.

231572262139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 43.

The spelling of 231572262139 in words is "two hundred thirty-one billion, five hundred seventy-two million, two hundred sixty-two thousand, one hundred thirty-nine".