311213221319 has 36 divisors (see below), whose sum is σ = 427651389720. Its totient is φ = 223849604160.

The previous prime is 311213221273. The next prime is 311213221357. The reversal of 311213221319 is 913122312113.

It is not a de Polignac number, because 311213221319 - 2²⁰ = 311212172743 is a prime.

It is a super-2 number, since 2×311213221319² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311213221291 and 311213221300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311213221379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1617164 + ... + 1799345.

It is an arithmetic number, because the mean of its divisors is an integer number (11879205270).

Almost surely, 2^311213221319 is an apocalyptic number.

311213221319 is a deficient number, since it is larger than the sum of its proper divisors (116438168401).

311213221319 is a wasteful number, since it uses less digits than its factorization.

311213221319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416560 (or 3416540 counting only the distinct ones).

The product of its digits is 1944, while the sum is 29.

The spelling of 311213221319 in words is "three hundred eleven billion, two hundred thirteen million, two hundred twenty-one thousand, three hundred nineteen".