313131313022 has 16 divisors (see below), whose sum is σ = 534674812032. Its totient is φ = 136144048920.

The previous prime is 313131313021. The next prime is 313131313031. The reversal of 313131313022 is 220313131313.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313131313021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309417788 + ... + 309418799.

It is an arithmetic number, because the mean of its divisors is an integer number (33417175752).

Almost surely, 2^313131313022 is an apocalyptic number.

313131313022 is a deficient number, since it is larger than the sum of its proper divisors (221543499010).

313131313022 is a wasteful number, since it uses less digits than its factorization.

313131313022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618836623.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 313131313022 its reverse (220313131313), we get a palindrome (533444444335).

The spelling of 313131313022 in words is "three hundred thirteen billion, one hundred thirty-one million, three hundred thirteen thousand, twenty-two".