313113331 has 4 divisors (see below), whose sum is σ = 329593000. Its totient is φ = 296633664.

The previous prime is 313113323. The next prime is 313113341. The reversal of 313113331 is 133311313.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 313113331 - 2³ = 313113323 is a prime.

It is a super-2 number, since 2×313113331² = 196079916099831122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 16479649 = 313113331 / (3 + 1 + 3 + 1 + 1 + 3 + 3 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 313113299 and 313113308.

It is not an unprimeable number, because it can be changed into a prime (313113341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8239806 + ... + 8239843.

It is an arithmetic number, because the mean of its divisors is an integer number (82398250).

Almost surely, 2^313113331 is an apocalyptic number.

313113331 is a deficient number, since it is larger than the sum of its proper divisors (16479669).

313113331 is a wasteful number, since it uses less digits than its factorization.

313113331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16479668.

The product of its digits is 243, while the sum is 19.

The square root of 313113331 is about 17695.0086465082. The cubic root of 313113331 is about 679.0480704123.

Adding to 313113331 its reverse (133311313), we get a palindrome (446424644).

The spelling of 313113331 in words is "three hundred thirteen million, one hundred thirteen thousand, three hundred thirty-one".