31112313227 has 2 divisors, whose sum is σ = 31112313228. Its totient is φ = 31112313226.

The previous prime is 31112313157. The next prime is 31112313229. The reversal of 31112313227 is 72231321113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31112313227 - 2³² = 26817345931 is a prime.

Together with 31112313229, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 31112313196 and 31112313205.

It is not a weakly prime, because it can be changed into another prime (31112313229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556156613 + 15556156614.

It is an arithmetic number, because the mean of its divisors is an integer number (15556156614).

Almost surely, 2^31112313227 is an apocalyptic number.

31112313227 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112313227 is an equidigital number, since it uses as much as digits as its factorization.

31112313227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 26.

The spelling of 31112313227 in words is "thirty-one billion, one hundred twelve million, three hundred thirteen thousand, two hundred twenty-seven".