31112313322313 has 4 divisors (see below), whose sum is σ = 31112379246720. Its totient is φ = 31112247397908.

The previous prime is 31112313322241. The next prime is 31112313322367. The reversal of 31112313322313 is 31322331321113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31112313322313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31112313382313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32249153 + ... + 33199886.

It is an arithmetic number, because the mean of its divisors is an integer number (7778094811680).

Almost surely, 2^{31112313322313} is an apocalyptic number.

It is an amenable number.

31112313322313 is a deficient number, since it is larger than the sum of its proper divisors (65924407).

31112313322313 is an equidigital number, since it uses as much as digits as its factorization.

31112313322313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65924406.

The product of its digits is 5832, while the sum is 29.

Adding to 31112313322313 its reverse (31322331321113), we get a palindrome (62434644643426).

The spelling of 31112313322313 in words is "thirty-one trillion, one hundred twelve billion, three hundred thirteen million, three hundred twenty-two thousand, three hundred thirteen".