2131040320 has 28 divisors (see below), whose sum is σ = 5074540524. Its totient is φ = 852416000.

The previous prime is 2131040299. The next prime is 2131040341. The reversal of 2131040320 is 230401312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2131040299) and next prime (2131040341).

It can be written as a sum of positive squares in 2 ways, for example, as 405136384 + 1725903936 = 20128^2 + 41544^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 2131040294 and 2131040303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3329431 + ... + 3330070.

Almost surely, 2^2131040320 is an apocalyptic number.

2131040320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131040320 is an abundant number, since it is smaller than the sum of its proper divisors (2943500204).

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

2131040320 is an equidigital number, since it uses as much as digits as its factorization.

2131040320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6659518 (or 6659508 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2131040320 is about 46163.1922639672. The cubic root of 2131040320 is about 1286.8577891195.

Adding to 2131040320 its reverse (230401312), we get a palindrome (2361441632).

The spelling of 2131040320 in words is "two billion, one hundred thirty-one million, forty thousand, three hundred twenty".