31112112319 has 2 divisors, whose sum is σ = 31112112320. Its totient is φ = 31112112318.

The previous prime is 31112112281. The next prime is 31112112359. The reversal of 31112112319 is 91321121113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31112112319 - 2²⁹ = 30575241407 is a prime.

It is a super-2 number, since 2×31112112319² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31112112293 and 31112112302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31112112359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556056159 + 15556056160.

It is an arithmetic number, because the mean of its divisors is an integer number (15556056160).

Almost surely, 2^31112112319 is an apocalyptic number.

31112112319 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112112319 is an equidigital number, since it uses as much as digits as its factorization.

31112112319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 25.

The spelling of 31112112319 in words is "thirty-one billion, one hundred twelve million, one hundred twelve thousand, three hundred nineteen".