2100031102320 has 160 divisors (see below), whose sum is σ = 6695187200832. Its totient is φ = 544127901696.

The previous prime is 2100031102303. The next prime is 2100031102327. The reversal of 2100031102320 is 232011300012.

It is a super-2 number, since 2×2100031102320² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2100031102320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100031102327) 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, 6347724 + ... + 6670356.

Almost surely, 2^{2100031102320} is an apocalyptic number.

2100031102320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100031102320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3347593600416).

2100031102320 is an abundant number, since it is smaller than the sum of its proper divisors (4595156098512).

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

2100031102320 is a wasteful number, since it uses less digits than its factorization.

2100031102320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323419 (or 323413 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 2100031102320 its reverse (232011300012), we get a palindrome (2332042402332).

The spelling of 2100031102320 in words is "two trillion, one hundred billion, thirty-one million, one hundred two thousand, three hundred twenty".