313131113 has 16 divisors (see below), whose sum is σ = 324336960. Its totient is φ = 302186496.

The previous prime is 313131107. The next prime is 313131127. The reversal of 313131113 is 311131313.

It is a cyclic number.

It is not a de Polignac number, because 313131113 - 2¹⁴ = 313114729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 313131091 and 313131100.

It is not an unprimeable number, because it can be changed into a prime (313131163) 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, 1218281 + ... + 1218537.

It is an arithmetic number, because the mean of its divisors is an integer number (20271060).

Almost surely, 2^313131113 is an apocalyptic number.

It is an amenable number.

313131113 is a deficient number, since it is larger than the sum of its proper divisors (11205847).

313131113 is a wasteful number, since it uses less digits than its factorization.

313131113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616.

The product of its digits is 81, while the sum is 17.

The square root of 313131113 is about 17695.5110974507. The cubic root of 313131113 is about 679.0609247614.

Adding to 313131113 its reverse (311131313), we get a palindrome (624262426).

The spelling of 313131113 in words is "three hundred thirteen million, one hundred thirty-one thousand, one hundred thirteen".