313122331 has 4 divisors (see below), whose sum is σ = 317411752. Its totient is φ = 308832912.

The previous prime is 313122317. The next prime is 313122349. The reversal of 313122331 is 133221313.

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 313122331 - 2¹⁵ = 313089563 is a prime.

It is a super-2 number, since 2×313122331² = 196091188341747122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313122299 and 313122308.

It is not an unprimeable number, because it can be changed into a prime (313122301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2144601 + ... + 2144746.

It is an arithmetic number, because the mean of its divisors is an integer number (79352938).

Almost surely, 2^313122331 is an apocalyptic number.

313122331 is a deficient number, since it is larger than the sum of its proper divisors (4289421).

313122331 is an equidigital number, since it uses as much as digits as its factorization.

313122331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4289420.

The product of its digits is 324, while the sum is 19.

The square root of 313122331 is about 17695.2629536834. The cubic root of 313122331 is about 679.0545764422.

Adding to 313122331 its reverse (133221313), we get a palindrome (446343644).

The spelling of 313122331 in words is "three hundred thirteen million, one hundred twenty-two thousand, three hundred thirty-one".