311312103100 has 72 divisors (see below), whose sum is σ = 696870810608. Its totient is φ = 120655180800.

The previous prime is 311312103077. The next prime is 311312103133. The reversal of 311312103100 is 1301213113.

It is a super-2 number, since 2×311312103100² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27844 + ... + 789556.

Almost surely, 2^311312103100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311312103100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348435405304).

311312103100 is an abundant number, since it is smaller than the sum of its proper divisors (385558707508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311312103100 is a wasteful number, since it uses less digits than its factorization.

311312103100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761855 (or 761848 counting only the distinct ones).

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

Adding to 311312103100 its reverse (1301213113), we get a palindrome (312613316213).

The spelling of 311312103100 in words is "three hundred eleven billion, three hundred twelve million, one hundred three thousand, one hundred".