2313191912220 has 576 divisors, whose sum is σ = 8283975598080. Its totient is φ = 511610112000.

The previous prime is 2313191912209. The next prime is 2313191912243. The reversal of 2313191912220 is 222191913132.

2313191912220 is a `hidden beast` number, since 2 + 31 + 319 + 1 + 91 + 2 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1434092134 + ... + 1434093746.

It is an arithmetic number, because the mean of its divisors is an integer number (14381902080).

Almost surely, 2^{2313191912220} is an apocalyptic number.

2313191912220 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 2313191912220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4141987799040).

2313191912220 is an abundant number, since it is smaller than the sum of its proper divisors (5970783685860).

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

2313191912220 is a wasteful number, since it uses less digits than its factorization.

2313191912220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986 (or 1981 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The spelling of 2313191912220 in words is "two trillion, three hundred thirteen billion, one hundred ninety-one million, nine hundred twelve thousand, two hundred twenty".