231727981039 has 2 divisors, whose sum is σ = 231727981040. Its totient is φ = 231727981038.

The previous prime is 231727980977. The next prime is 231727981117. The reversal of 231727981039 is 930189727132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231727981039 - 2³³ = 223138046447 is a prime.

It is a super-2 number, since 2×231727981039² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231727988039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115863990519 + 115863990520.

It is an arithmetic number, because the mean of its divisors is an integer number (115863990520).

Almost surely, 2^231727981039 is an apocalyptic number.

231727981039 is a deficient number, since it is larger than the sum of its proper divisors (1).

231727981039 is an equidigital number, since it uses as much as digits as its factorization.

231727981039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 231727981039 in words is "two hundred thirty-one billion, seven hundred twenty-seven million, nine hundred eighty-one thousand, thirty-nine".