2181331230 has 64 divisors (see below), whose sum is σ = 5644779840. Its totient is φ = 536288256.

The previous prime is 2181331181. The next prime is 2181331267. The reversal of 2181331230 is 321331812.

It is a self number, because there is not a number n which added to its sum of digits gives 2181331230.

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, 368736 + ... + 374604.

It is an arithmetic number, because the mean of its divisors is an integer number (88199685).

Almost surely, 2^2181331230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2181331230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2822389920).

2181331230 is an abundant number, since it is smaller than the sum of its proper divisors (3463448610).

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

2181331230 is a wasteful number, since it uses less digits than its factorization.

2181331230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6845.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2181331230 is about 46704.7238510196. The cubic root of 2181331230 is about 1296.9021365629.

The spelling of 2181331230 in words is "two billion, one hundred eighty-one million, three hundred thirty-one thousand, two hundred thirty".