313311031 has 4 divisors (see below), whose sum is σ = 341793864. Its totient is φ = 284828200.

The previous prime is 313310993. The next prime is 313311049. The reversal of 313311031 is 130113313.

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 313311031 - 2⁷ = 313310903 is a prime.

It is a super-2 number, since 2×313311031² = 196327604292565922, 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 = 313310996 and 313311014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313311731) 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, 14241400 + ... + 14241421.

It is an arithmetic number, because the mean of its divisors is an integer number (85448466).

Almost surely, 2^313311031 is an apocalyptic number.

313311031 is a deficient number, since it is larger than the sum of its proper divisors (28482833).

313311031 is a wasteful number, since it uses less digits than its factorization.

313311031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28482832.

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

The square root of 313311031 is about 17700.5940860752. The cubic root of 313311031 is about 679.1909575029.

Adding to 313311031 its reverse (130113313), we get a palindrome (443424344).

The spelling of 313311031 in words is "three hundred thirteen million, three hundred eleven thousand, thirty-one".