2331911920 has 80 divisors (see below), whose sum is σ = 5847250752. Its totient is φ = 859760640.

The previous prime is 2331911893. The next prime is 2331911951. The reversal of 2331911920 is 291191332.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021180 + ... + 1023460.

Almost surely, 2^2331911920 is an apocalyptic number.

2331911920 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 2331911920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2923625376).

2331911920 is an abundant number, since it is smaller than the sum of its proper divisors (3515338832).

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

2331911920 is a wasteful number, since it uses less digits than its factorization.

2331911920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3290 (or 3284 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 2331911920 is about 48289.8738867684. The cubic root of 2331911920 is about 1326.0830200685.

The spelling of 2331911920 in words is "two billion, three hundred thirty-one million, nine hundred eleven thousand, nine hundred twenty".