31031312023 has 2 divisors, whose sum is σ = 31031312024. Its totient is φ = 31031312022.

The previous prime is 31031312021. The next prime is 31031312027. The reversal of 31031312023 is 32021313013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31031312023 - 2¹ = 31031312021 is a prime.

Together with 31031312021, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31031312021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15515656011 + 15515656012.

It is an arithmetic number, because the mean of its divisors is an integer number (15515656012).

Almost surely, 2^31031312023 is an apocalyptic number.

31031312023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31031312023 is an equidigital number, since it uses as much as digits as its factorization.

31031312023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31031312023 its reverse (32021313013), we get a palindrome (63052625036).

The spelling of 31031312023 in words is "thirty-one billion, thirty-one million, three hundred twelve thousand, twenty-three".