231257071319 has 2 divisors, whose sum is σ = 231257071320. Its totient is φ = 231257071318.

The previous prime is 231257071313. The next prime is 231257071373. The reversal of 231257071319 is 913170752132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231257071319 - 2⁴ = 231257071303 is a prime.

It is a super-2 number, since 2×231257071319² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231257071313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115628535659 + 115628535660.

It is an arithmetic number, because the mean of its divisors is an integer number (115628535660).

Almost surely, 2^231257071319 is an apocalyptic number.

231257071319 is a deficient number, since it is larger than the sum of its proper divisors (1).

231257071319 is an equidigital number, since it uses as much as digits as its factorization.

231257071319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 41.

The spelling of 231257071319 in words is "two hundred thirty-one billion, two hundred fifty-seven million, seventy-one thousand, three hundred nineteen".