31112112023 has 2 divisors, whose sum is σ = 31112112024. Its totient is φ = 31112112022.

The previous prime is 31112112011. The next prime is 31112112127. The reversal of 31112112023 is 32021121113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31112112023 - 2⁴ = 31112112007 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 31112111992 and 31112112010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31112102023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556056011 + 15556056012.

It is an arithmetic number, because the mean of its divisors is an integer number (15556056012).

Almost surely, 2^31112112023 is an apocalyptic number.

31112112023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112112023 is an equidigital number, since it uses as much as digits as its factorization.

31112112023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31112112023 its reverse (32021121113), we get a palindrome (63133233136).

The spelling of 31112112023 in words is "thirty-one billion, one hundred twelve million, one hundred twelve thousand, twenty-three".