2131323330 has 64 divisors (see below), whose sum is σ = 5196078720. Its totient is φ = 559397376.

The previous prime is 2131323329. The next prime is 2131323343. The reversal of 2131323330 is 333231312.

2131323330 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2131323297 and 2131323306.

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, 1692241 + ... + 1693499.

It is an arithmetic number, because the mean of its divisors is an integer number (81188730).

Almost surely, 2^2131323330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131323330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2598039360).

2131323330 is an abundant number, since it is smaller than the sum of its proper divisors (3064755390).

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

2131323330 is a wasteful number, since it uses less digits than its factorization.

2131323330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 2131323330 is about 46166.2574831445. The cubic root of 2131323330 is about 1286.9147530819.

Adding to 2131323330 its reverse (333231312), we get a palindrome (2464554642).

The spelling of 2131323330 in words is "two billion, one hundred thirty-one million, three hundred twenty-three thousand, three hundred thirty".