2131332320 has 96 divisors (see below), whose sum is σ = 5454866592. Its totient is φ = 782272512.

The previous prime is 2131332289. The next prime is 2131332331. The reversal of 2131332320 is 232331312.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2131332292 and 2131332301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356879 + ... + 362801.

It is an arithmetic number, because the mean of its divisors is an integer number (56821527).

Almost surely, 2^2131332320 is an apocalyptic number.

2131332320 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 2131332320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2727433296).

2131332320 is an abundant number, since it is smaller than the sum of its proper divisors (3323534272).

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

2131332320 is a wasteful number, since it uses less digits than its factorization.

2131332320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6124 (or 6116 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 2131332320 is about 46166.3548485258. The cubic root of 2131332320 is about 1286.9165624972.

Adding to 2131332320 its reverse (232331312), we get a palindrome (2363663632).

The spelling of 2131332320 in words is "two billion, one hundred thirty-one million, three hundred thirty-two thousand, three hundred twenty".