2123310204 has 72 divisors (see below), whose sum is σ = 5474545440. Its totient is φ = 693705600.

The previous prime is 2123310191. The next prime is 2123310223. The reversal of 2123310204 is 4020133212.

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 23 ways as a sum of consecutive naturals, for example, 681402 + ... + 684510.

Almost surely, 2^2123310204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123310204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2737272720).

2123310204 is an abundant number, since it is smaller than the sum of its proper divisors (3351235236).

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

2123310204 is a wasteful number, since it uses less digits than its factorization.

2123310204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491 (or 3486 counting only the distinct ones).

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

The square root of 2123310204 is about 46079.3902303405. The cubic root of 2123310204 is about 1285.2999252466.

Adding to 2123310204 its reverse (4020133212), we get a palindrome (6143443416).

The spelling of 2123310204 in words is "two billion, one hundred twenty-three million, three hundred ten thousand, two hundred four".