2131999936 has 56 divisors (see below), whose sum is σ = 4624431696. Its totient is φ = 967173120.

The previous prime is 2131999913. The next prime is 2131999949. The reversal of 2131999936 is 6399991312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389410 + ... + 394846.

Almost surely, 2^2131999936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131999936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2312215848).

2131999936 is an abundant number, since it is smaller than the sum of its proper divisors (2492431760).

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

2131999936 is a wasteful number, since it uses less digits than its factorization.

2131999936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6017 (or 6007 counting only the distinct ones).

The product of its digits is 708588, while the sum is 52.

The square root of 2131999936 is about 46173.5848294238. The cubic root of 2131999936 is about 1287.0509192073.

The spelling of 2131999936 in words is "two billion, one hundred thirty-one million, nine hundred ninety-nine thousand, nine hundred thirty-six".