2131518132 has 48 divisors (see below), whose sum is σ = 5531897280. Its totient is φ = 709768224.

The previous prime is 2131518113. The next prime is 2131518143. The reversal of 2131518132 is 2318151312.

2131518132 is a `hidden beast` number, since 2 + 13 + 1 + 518 + 132 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 2131518096 and 2131518105.

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, 99663 + ... + 119145.

It is an arithmetic number, because the mean of its divisors is an integer number (115247860).

Almost surely, 2^2131518132 is an apocalyptic number.

It is an amenable number.

2131518132 is an abundant number, since it is smaller than the sum of its proper divisors (3400379148).

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

2131518132 is a wasteful number, since it uses less digits than its factorization.

2131518132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20509 (or 20501 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 2131518132 is about 46168.3672225908. The cubic root of 2131518132 is about 1286.9539596986.

Adding to 2131518132 its reverse (2318151312), we get a palindrome (4449669444).

The spelling of 2131518132 in words is "two billion, one hundred thirty-one million, five hundred eighteen thousand, one hundred thirty-two".