311311223313 has 32 divisors (see below), whose sum is σ = 447986880000. Its totient is φ = 191659499136.

The previous prime is 311311223309. The next prime is 311311223329. The reversal of 311311223313 is 313322113113.

It is not a de Polignac number, because 311311223313 - 2² = 311311223309 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (311311223383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1095781 + ... + 1350317.

It is an arithmetic number, because the mean of its divisors is an integer number (13999590000).

Almost surely, 2^311311223313 is an apocalyptic number.

It is an amenable number.

311311223313 is a deficient number, since it is larger than the sum of its proper divisors (136675656687).

311311223313 is a wasteful number, since it uses less digits than its factorization.

311311223313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255101.

The product of its digits is 972, while the sum is 24.

Adding to 311311223313 its reverse (313322113113), we get a palindrome (624633336426).

The spelling of 311311223313 in words is "three hundred eleven billion, three hundred eleven million, two hundred twenty-three thousand, three hundred thirteen".