331400220102 has 168 divisors, whose sum is σ = 870493993992. Its totient is φ = 94303440000.

The previous prime is 331400220089. The next prime is 331400220121. The reversal of 331400220102 is 201022004133.

331400220102 is a `hidden beast` number, since 3 + 31 + 400 + 220 + 10 + 2 = 666.

It is a super-2 number, since 2×331400220102² (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 83 ways as a sum of consecutive naturals, for example, 17922702 + ... + 17941182.

It is an arithmetic number, because the mean of its divisors is an integer number (5181511869).

Almost surely, 2^331400220102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331400220102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435246996996).

331400220102 is an abundant number, since it is smaller than the sum of its proper divisors (539093773890).

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

331400220102 is a wasteful number, since it uses less digits than its factorization.

331400220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18766 (or 18744 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 331400220102 its reverse (201022004133), we get a palindrome (532422224235).

The spelling of 331400220102 in words is "three hundred thirty-one billion, four hundred million, two hundred twenty thousand, one hundred two".