311431004120087 has 2 divisors, whose sum is σ = 311431004120088. Its totient is φ = 311431004120086.

The previous prime is 311431004119997. The next prime is 311431004120179. The reversal of 311431004120087 is 780021400134113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311431004120087 - 2²⁶ = 311430937011223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311431004420087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155715502060043 + 155715502060044.

It is an arithmetic number, because the mean of its divisors is an integer number (155715502060044).

Almost surely, 2^{311431004120087} is an apocalyptic number.

311431004120087 is a deficient number, since it is larger than the sum of its proper divisors (1).

311431004120087 is an equidigital number, since it uses as much as digits as its factorization.

311431004120087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 311431004120087 in words is "three hundred eleven trillion, four hundred thirty-one billion, four million, one hundred twenty thousand, eighty-seven".