313115211 has 6 divisors (see below), whose sum is σ = 452277540. Its totient is φ = 208743468.

The previous prime is 313115191. The next prime is 313115219. The reversal of 313115211 is 112511313.

It is not a de Polignac number, because 313115211 - 2¹⁰ = 313114187 is a prime.

It is a super-2 number, since 2×313115211² = 196082270719149042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313115219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17395281 + ... + 17395298.

It is an arithmetic number, because the mean of its divisors is an integer number (75379590).

Almost surely, 2^313115211 is an apocalyptic number.

313115211 is a deficient number, since it is larger than the sum of its proper divisors (139162329).

313115211 is a wasteful number, since it uses less digits than its factorization.

313115211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34790585 (or 34790582 counting only the distinct ones).

The product of its digits is 90, while the sum is 18.

The square root of 313115211 is about 17695.0617687535. The cubic root of 313115211 is about 679.0494294600.

Adding to 313115211 its reverse (112511313), we get a palindrome (425626524).

The spelling of 313115211 in words is "three hundred thirteen million, one hundred fifteen thousand, two hundred eleven".