2131283520 has 168 divisors, whose sum is σ = 7389717504. Its totient is φ = 563770368.

The previous prime is 2131283461. The next prime is 2131283533. The reversal of 2131283520 is 253821312.

2131283520 is a `hidden beast` number, since 2 + 13 + 128 + 3 + 520 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 362847 + ... + 368673.

Almost surely, 2^2131283520 is an apocalyptic number.

2131283520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131283520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3694858752).

2131283520 is an abundant number, since it is smaller than the sum of its proper divisors (5258433984).

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

2131283520 is a wasteful number, since it uses less digits than its factorization.

2131283520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5977 (or 5964 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2131283520 is about 46165.8263220751. The cubic root of 2131283520 is about 1286.9067404707.

The spelling of 2131283520 in words is "two billion, one hundred thirty-one million, two hundred eighty-three thousand, five hundred twenty".