313131031123 has 16 divisors (see below), whose sum is σ = 336731281920. Its totient is φ = 290119043200.

The previous prime is 313131031079. The next prime is 313131031133. The reversal of 313131031123 is 321130131313.

It is a cyclic number.

It is not a de Polignac number, because 313131031123 - 2¹⁷ = 313130900051 is a prime.

It is a super-2 number, since 2×313131031123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313131031094 and 313131031103.

It is not an unprimeable number, because it can be changed into a prime (313131031133) 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, 598578 + ... + 992248.

It is an arithmetic number, because the mean of its divisors is an integer number (21045705120).

Almost surely, 2^313131031123 is an apocalyptic number.

313131031123 is a deficient number, since it is larger than the sum of its proper divisors (23600250797).

313131031123 is a wasteful number, since it uses less digits than its factorization.

313131031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394418.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 313131031123 its reverse (321130131313), we get a palindrome (634261162436).

The spelling of 313131031123 in words is "three hundred thirteen billion, one hundred thirty-one million, thirty-one thousand, one hundred twenty-three".