231519040931 has 2 divisors, whose sum is σ = 231519040932. Its totient is φ = 231519040930.

The previous prime is 231519040897. The next prime is 231519040967. The reversal of 231519040931 is 139040915132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231519040931 - 2¹⁴ = 231519024547 is a prime.

It is a super-2 number, since 2×231519040931² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231519000931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115759520465 + 115759520466.

It is an arithmetic number, because the mean of its divisors is an integer number (115759520466).

Almost surely, 2^231519040931 is an apocalyptic number.

231519040931 is a deficient number, since it is larger than the sum of its proper divisors (1).

231519040931 is an equidigital number, since it uses as much as digits as its factorization.

231519040931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 231519040931 in words is "two hundred thirty-one billion, five hundred nineteen million, forty thousand, nine hundred thirty-one".