31341423991 has 2 divisors, whose sum is σ = 31341423992. Its totient is φ = 31341423990.

The previous prime is 31341423983. The next prime is 31341424021. The reversal of 31341423991 is 19932414313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31341423991 - 2³ = 31341423983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31341453991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15670711995 + 15670711996.

It is an arithmetic number, because the mean of its divisors is an integer number (15670711996).

Almost surely, 2^31341423991 is an apocalyptic number.

31341423991 is a deficient number, since it is larger than the sum of its proper divisors (1).

31341423991 is an equidigital number, since it uses as much as digits as its factorization.

31341423991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 40.

The spelling of 31341423991 in words is "thirty-one billion, three hundred forty-one million, four hundred twenty-three thousand, nine hundred ninety-one".