312132421440991 has 2 divisors, whose sum is σ = 312132421440992. Its totient is φ = 312132421440990.

The previous prime is 312132421440907. The next prime is 312132421441021. The reversal of 312132421440991 is 199044124231213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312132421440991 - 2⁷ = 312132421440863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312132421450991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156066210720495 + 156066210720496.

It is an arithmetic number, because the mean of its divisors is an integer number (156066210720496).

Almost surely, 2^{312132421440991} is an apocalyptic number.

312132421440991 is a deficient number, since it is larger than the sum of its proper divisors (1).

312132421440991 is an equidigital number, since it uses as much as digits as its factorization.

312132421440991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 312132421440991 in words is "three hundred twelve trillion, one hundred thirty-two billion, four hundred twenty-one million, four hundred forty thousand, nine hundred ninety-one".