313123331 has 4 divisors (see below), whose sum is σ = 316223664. Its totient is φ = 310023000.

The previous prime is 313123313. The next prime is 313123333. The reversal of 313123331 is 133321313.

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 313123331 - 2²⁶ = 246014467 is a prime.

It is a super-2 number, since 2×313123331² = 196092440833071122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313123333) 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, 1550015 + ... + 1550216.

It is an arithmetic number, because the mean of its divisors is an integer number (79055916).

Almost surely, 2^313123331 is an apocalyptic number.

313123331 is a deficient number, since it is larger than the sum of its proper divisors (3100333).

313123331 is a wasteful number, since it uses less digits than its factorization.

313123331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100332.

The product of its digits is 486, while the sum is 20.

The square root of 313123331 is about 17695.2912098106. The cubic root of 313123331 is about 679.0552993267.

Adding to 313123331 its reverse (133321313), we get a palindrome (446444644).

It can be divided in two parts, 31312 and 3331, that added together give a palindrome (34643).

The spelling of 313123331 in words is "three hundred thirteen million, one hundred twenty-three thousand, three hundred thirty-one".