2321331920 has 40 divisors (see below), whose sum is σ = 5403511296. Its totient is φ = 927429248.

The previous prime is 2321331919. The next prime is 2321331953. The reversal of 2321331920 is 291331232.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 2321331920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52229 + ... + 85851.

Almost surely, 2^2321331920 is an apocalyptic number.

2321331920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2321331920 is an abundant number, since it is smaller than the sum of its proper divisors (3082179376).

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

2321331920 is a wasteful number, since it uses less digits than its factorization.

2321331920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34499 (or 34493 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 2321331920 is about 48180.2025732562. The cubic root of 2321331920 is about 1324.0744779101.

The spelling of 2321331920 in words is "two billion, three hundred twenty-one million, three hundred thirty-one thousand, nine hundred twenty".