31013213112199 has 4 divisors (see below), whose sum is σ = 31050988037640. Its totient is φ = 30975438186760.

The previous prime is 31013213112181. The next prime is 31013213112221. The reversal of 31013213112199 is 99121131231013.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31013213112199 - 2²¹ = 31013211015047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013213112499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18887461489 + ... + 18887463130.

It is an arithmetic number, because the mean of its divisors is an integer number (7762747009410).

Almost surely, 2^{31013213112199} is an apocalyptic number.

31013213112199 is a deficient number, since it is larger than the sum of its proper divisors (37774925441).

31013213112199 is an equidigital number, since it uses as much as digits as its factorization.

31013213112199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37774925440.

The product of its (nonzero) digits is 8748, while the sum is 37.

The spelling of 31013213112199 in words is "thirty-one trillion, thirteen billion, two hundred thirteen million, one hundred twelve thousand, one hundred ninety-nine".