31231320212023 has 2 divisors, whose sum is σ = 31231320212024. Its totient is φ = 31231320212022.

The previous prime is 31231320211979. The next prime is 31231320212069. The reversal of 31231320212023 is 32021202313213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31231320212023 - 2¹⁷ = 31231320080951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31231320212423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615660106011 + 15615660106012.

It is an arithmetic number, because the mean of its divisors is an integer number (15615660106012).

Almost surely, 2^{31231320212023} is an apocalyptic number.

31231320212023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31231320212023 is an equidigital number, since it uses as much as digits as its factorization.

31231320212023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31231320212023 its reverse (32021202313213), we get a palindrome (63252522525236).

The spelling of 31231320212023 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred twenty million, two hundred twelve thousand, twenty-three".