313121311 has 8 divisors (see below), whose sum is σ = 332866800. Its totient is φ = 293702400.

The previous prime is 313121293. The next prime is 313121321. The reversal of 313121311 is 113121313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 313121311 - 2⁵ = 313121279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313121321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79666 + ... + 83503.

It is an arithmetic number, because the mean of its divisors is an integer number (41608350).

Almost surely, 2^313121311 is an apocalyptic number.

313121311 is a deficient number, since it is larger than the sum of its proper divisors (19745489).

313121311 is a wasteful number, since it uses less digits than its factorization.

313121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163289.

The product of its digits is 54, while the sum is 16.

The square root of 313121311 is about 17695.2341323872. The cubic root of 313121311 is about 679.0538390984.

Adding to 313121311 its reverse (113121313), we get a palindrome (426242624).

It can be divided in two parts, 31312 and 1311, that added together give a palindrome (32623).

The spelling of 313121311 in words is "three hundred thirteen million, one hundred twenty-one thousand, three hundred eleven".