2131338312 has 32 divisors (see below), whose sum is σ = 5920384800. Its totient is φ = 710446032.

The previous prime is 2131338311. The next prime is 2131338323. The reversal of 2131338312 is 2138331312.

2131338312 is a `hidden beast` number, since 2 + 1 + 313 + 38 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is not an unprimeable number, because it can be changed into a prime (2131338311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4933438 + ... + 4933869.

It is an arithmetic number, because the mean of its divisors is an integer number (185012025).

Almost surely, 2^2131338312 is an apocalyptic number.

It is an amenable number.

2131338312 is an abundant number, since it is smaller than the sum of its proper divisors (3789046488).

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

2131338312 is a wasteful number, since it uses less digits than its factorization.

2131338312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9867322 (or 9867312 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 2131338312 is about 46166.4197442253. The cubic root of 2131338312 is about 1286.9177685030.

Adding to 2131338312 its reverse (2138331312), we get a palindrome (4269669624).

It can be divided in two parts, 213133 and 8312, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 2131338312 in words is "two billion, one hundred thirty-one million, three hundred thirty-eight thousand, three hundred twelve".