313131023 has 8 divisors (see below), whose sum is σ = 316640016. Its totient is φ = 309635200.

The previous prime is 313131019. The next prime is 313131043. The reversal of 313131023 is 320131313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 313131023 - 2² = 313131019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313130992 and 313131010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313131043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49088 + ... + 55098.

It is an arithmetic number, because the mean of its divisors is an integer number (39580002).

Almost surely, 2^313131023 is an apocalyptic number.

313131023 is a deficient number, since it is larger than the sum of its proper divisors (3508993).

313131023 is a wasteful number, since it uses less digits than its factorization.

313131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6585.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 313131023 is about 17695.5085544327. The cubic root of 313131023 is about 679.0608597029.

Adding to 313131023 its reverse (320131313), we get a palindrome (633262336).

The spelling of 313131023 in words is "three hundred thirteen million, one hundred thirty-one thousand, twenty-three".