311302122102 has 64 divisors (see below), whose sum is σ = 721951672320. Its totient is φ = 99243144000.

The previous prime is 311302122073. The next prime is 311302122113. The reversal of 311302122102 is 201221203113.

It is a super-2 number, since 2×311302122102² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17728227 + ... + 17745777.

It is an arithmetic number, because the mean of its divisors is an integer number (11280494880).

Almost surely, 2^311302122102 is an apocalyptic number.

311302122102 is an abundant number, since it is smaller than the sum of its proper divisors (410649550218).

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

311302122102 is a wasteful number, since it uses less digits than its factorization.

311302122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31866 (or 31860 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 311302122102 its reverse (201221203113), we get a palindrome (512523325215).

The spelling of 311302122102 in words is "three hundred eleven billion, three hundred two million, one hundred twenty-two thousand, one hundred two".