31310020199 has 2 divisors, whose sum is σ = 31310020200. Its totient is φ = 31310020198.

The previous prime is 31310020187. The next prime is 31310020207. The reversal of 31310020199 is 99102001313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31310020199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31310020109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15655010099 + 15655010100.

It is an arithmetic number, because the mean of its divisors is an integer number (15655010100).

Almost surely, 2^31310020199 is an apocalyptic number.

31310020199 is a deficient number, since it is larger than the sum of its proper divisors (1).

31310020199 is an equidigital number, since it uses as much as digits as its factorization.

31310020199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 29.

The spelling of 31310020199 in words is "thirty-one billion, three hundred ten million, twenty thousand, one hundred ninety-nine".