31013321320199 has 2 divisors, whose sum is σ = 31013321320200. Its totient is φ = 31013321320198.

The previous prime is 31013321320181. The next prime is 31013321320231. The reversal of 31013321320199 is 99102312331013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31013321320199 - 2³² = 31009026352903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31013321320099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506660660099 + 15506660660100.

It is an arithmetic number, because the mean of its divisors is an integer number (15506660660100).

Almost surely, 2^{31013321320199} is an apocalyptic number.

31013321320199 is a deficient number, since it is larger than the sum of its proper divisors (1).

31013321320199 is an equidigital number, since it uses as much as digits as its factorization.

31013321320199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 38.

The spelling of 31013321320199 in words is "thirty-one trillion, thirteen billion, three hundred twenty-one million, three hundred twenty thousand, one hundred ninety-nine".