312031032991 has 2 divisors, whose sum is σ = 312031032992. Its totient is φ = 312031032990.

The previous prime is 312031032977. The next prime is 312031033051. The reversal of 312031032991 is 199230130213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312031032991 - 2¹⁹ = 312030508703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312031032961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156015516495 + 156015516496.

It is an arithmetic number, because the mean of its divisors is an integer number (156015516496).

Almost surely, 2^312031032991 is an apocalyptic number.

312031032991 is a deficient number, since it is larger than the sum of its proper divisors (1).

312031032991 is an equidigital number, since it uses as much as digits as its factorization.

312031032991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 34.

The spelling of 312031032991 in words is "three hundred twelve billion, thirty-one million, thirty-two thousand, nine hundred ninety-one".