313131223023 has 16 divisors (see below), whose sum is σ = 446286710016. Its totient is φ = 194807687360.

The previous prime is 313131222997. The next prime is 313131223043. The reversal of 313131223023 is 320322131313.

It is a cyclic number.

It is not a de Polignac number, because 313131223023 - 2⁹ = 313131222511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313131222984 and 313131223002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313131223043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55340265 + ... + 55345922.

It is an arithmetic number, because the mean of its divisors is an integer number (27892919376).

Almost surely, 2^313131223023 is an apocalyptic number.

313131223023 is a deficient number, since it is larger than the sum of its proper divisors (133155486993).

313131223023 is a wasteful number, since it uses less digits than its factorization.

313131223023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110686254.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 313131223023 its reverse (320322131313), we get a palindrome (633453354336).

The spelling of 313131223023 in words is "three hundred thirteen billion, one hundred thirty-one million, two hundred twenty-three thousand, twenty-three".