31231301967967 has 2 divisors, whose sum is σ = 31231301967968. Its totient is φ = 31231301967966.

The previous prime is 31231301967889. The next prime is 31231301967973. The reversal of 31231301967967 is 76976910313213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31231301967967 - 2⁷ = 31231301967839 is a prime.

It is a super-2 number, since 2×31231301967967² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31231301997967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615650983983 + 15615650983984.

It is an arithmetic number, because the mean of its divisors is an integer number (15615650983984).

Almost surely, 2^{31231301967967} is an apocalyptic number.

31231301967967 is a deficient number, since it is larger than the sum of its proper divisors (1).

31231301967967 is an equidigital number, since it uses as much as digits as its factorization.

31231301967967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7715736, while the sum is 58.

The spelling of 31231301967967 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred one million, nine hundred sixty-seven thousand, nine hundred sixty-seven".