2131312332 has 24 divisors (see below), whose sum is σ = 5107470256. Its totient is φ = 691236288.

The previous prime is 2131312303. The next prime is 2131312363. The reversal of 2131312332 is 2332131312.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2131312299 and 2131312308.

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, 2399683 + ... + 2400570.

Almost surely, 2^2131312332 is an apocalyptic number.

It is an amenable number.

2131312332 is an abundant number, since it is smaller than the sum of its proper divisors (2976157924).

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

2131312332 is a wasteful number, since it uses less digits than its factorization.

2131312332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800297 (or 4800295 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 2131312332 is about 46166.1383700218. The cubic root of 2131312332 is about 1286.9125395099.

Adding to 2131312332 its reverse (2332131312), we get a palindrome (4463443644).

The spelling of 2131312332 in words is "two billion, one hundred thirty-one million, three hundred twelve thousand, three hundred thirty-two".