231517751107 has 2 divisors, whose sum is σ = 231517751108. Its totient is φ = 231517751106.

The previous prime is 231517751027. The next prime is 231517751111. The reversal of 231517751107 is 701157715132.

231517751107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231517751107 - 2²⁷ = 231383533379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231517751107.

It is not a weakly prime, because it can be changed into another prime (231517751407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115758875553 + 115758875554.

It is an arithmetic number, because the mean of its divisors is an integer number (115758875554).

Almost surely, 2^231517751107 is an apocalyptic number.

231517751107 is a deficient number, since it is larger than the sum of its proper divisors (1).

231517751107 is an equidigital number, since it uses as much as digits as its factorization.

231517751107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51450, while the sum is 40.

The spelling of 231517751107 in words is "two hundred thirty-one billion, five hundred seventeen million, seven hundred fifty-one thousand, one hundred seven".