2131477992 has 96 divisors (see below), whose sum is σ = 6603854400. Its totient is φ = 608401152.

The previous prime is 2131477979. The next prime is 2131477993. The reversal of 2131477992 is 2997741312.

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 (2131477993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 996348 + ... + 998484.

It is an arithmetic number, because the mean of its divisors is an integer number (68790150).

Almost surely, 2^2131477992 is an apocalyptic number.

It is an amenable number.

2131477992 is an abundant number, since it is smaller than the sum of its proper divisors (4472376408).

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

2131477992 is a wasteful number, since it uses less digits than its factorization.

2131477992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4135 (or 4128 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 2131477992 is about 46167.9325073151. The cubic root of 2131477992 is about 1286.9458811597.

The spelling of 2131477992 in words is "two billion, one hundred thirty-one million, four hundred seventy-seven thousand, nine hundred ninety-two".