231043869731 has 2 divisors, whose sum is σ = 231043869732. Its totient is φ = 231043869730.

The previous prime is 231043869709. The next prime is 231043869761. The reversal of 231043869731 is 137968340132.

231043869731 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-231043869731 is a prime.

It is a super-2 number, since 2×231043869731² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231043869761) 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, 115521934865 + 115521934866.

It is an arithmetic number, because the mean of its divisors is an integer number (115521934866).

Almost surely, 2^231043869731 is an apocalyptic number.

231043869731 is a deficient number, since it is larger than the sum of its proper divisors (1).

231043869731 is an equidigital number, since it uses as much as digits as its factorization.

231043869731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 231043869731 in words is "two hundred thirty-one billion, forty-three million, eight hundred sixty-nine thousand, seven hundred thirty-one".