231091874567 has 2 divisors, whose sum is σ = 231091874568. Its totient is φ = 231091874566.

The previous prime is 231091874549. The next prime is 231091874593. The reversal of 231091874567 is 765478190132.

231091874567 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231091874567 is a prime.

It is a super-2 number, since 2×231091874567² (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 (231091874537) 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, 115545937283 + 115545937284.

It is an arithmetic number, because the mean of its divisors is an integer number (115545937284).

It is a 1-persistent number, because it is pandigital, but 2⋅231091874567 = 462183749134 is not.

Almost surely, 2^231091874567 is an apocalyptic number.

231091874567 is a deficient number, since it is larger than the sum of its proper divisors (1).

231091874567 is an equidigital number, since it uses as much as digits as its factorization.

231091874567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 231091874567 in words is "two hundred thirty-one billion, ninety-one million, eight hundred seventy-four thousand, five hundred sixty-seven".