2131730040 has 64 divisors (see below), whose sum is σ = 6976575360. Its totient is φ = 516782720.

The previous prime is 2131730033. The next prime is 2131730063. The reversal of 2131730040 is 400371312.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 2131729989 and 2131730016.

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, 806154 + ... + 808793.

It is an arithmetic number, because the mean of its divisors is an integer number (109008990).

Almost surely, 2^2131730040 is an apocalyptic number.

2131730040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131730040 is an abundant number, since it is smaller than the sum of its proper divisors (4844845320).

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

2131730040 is a wasteful number, since it uses less digits than its factorization.

2131730040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614972 (or 1614968 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 2131730040 is about 46170.6621135110. The cubic root of 2131730040 is about 1286.9966064236.

The spelling of 2131730040 in words is "two billion, one hundred thirty-one million, seven hundred thirty thousand, forty".