31013231210023 has 4 divisors (see below), whose sum is σ = 31013801161560. Its totient is φ = 31012661258488.

The previous prime is 31013231209993. The next prime is 31013231210053. The reversal of 31013231210023 is 32001213231013.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (31013231209993) and next prime (31013231210053).

It is a cyclic number.

It is not a de Polignac number, because 31013231210023 - 2⁵ = 31013231209991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31013231209976 and 31013231210003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013231210053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284894140 + ... + 285002977.

It is an arithmetic number, because the mean of its divisors is an integer number (7753450290390).

Almost surely, 2^{31013231210023} is an apocalyptic number.

31013231210023 is a deficient number, since it is larger than the sum of its proper divisors (569951537).

31013231210023 is an equidigital number, since it uses as much as digits as its factorization.

31013231210023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569951536.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31013231210023 its reverse (32001213231013), we get a palindrome (63014444441036).

The spelling of 31013231210023 in words is "thirty-one trillion, thirteen billion, two hundred thirty-one million, two hundred ten thousand, twenty-three".