313011331 has 4 divisors (see below), whose sum is σ = 313098192. Its totient is φ = 312924472.

The previous prime is 313011323. The next prime is 313011353. The reversal of 313011331 is 133110313.

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 313011331 - 2³ = 313011323 is a prime.

It is a super-3 number, since 3×313011331³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313011031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37780 + ... + 45313.

It is an arithmetic number, because the mean of its divisors is an integer number (78274548).

Almost surely, 2^313011331 is an apocalyptic number.

313011331 is a deficient number, since it is larger than the sum of its proper divisors (86861).

313011331 is an equidigital number, since it uses as much as digits as its factorization.

313011331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86860.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 313011331 is about 17692.1262430495. The cubic root of 313011331 is about 678.9743266921.

Adding to 313011331 its reverse (133110313), we get a palindrome (446121644).

The spelling of 313011331 in words is "three hundred thirteen million, eleven thousand, three hundred thirty-one".