2131382499 has 16 divisors (see below), whose sum is σ = 2921141664. Its totient is φ = 1381510400.

The previous prime is 2131382489. The next prime is 2131382507. The reversal of 2131382499 is 9942831312.

It is a cyclic number.

It is not a de Polignac number, because 2131382499 - 2⁴ = 2131382483 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131382499.

It is not an unprimeable number, because it can be changed into a prime (2131382489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6469 + ... + 65609.

It is an arithmetic number, because the mean of its divisors is an integer number (182571354).

Almost surely, 2^2131382499 is an apocalyptic number.

2131382499 is a deficient number, since it is larger than the sum of its proper divisors (789759165).

2131382499 is a wasteful number, since it uses less digits than its factorization.

2131382499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59478.

The product of its digits is 93312, while the sum is 42.

The square root of 2131382499 is about 46166.8983038714. The cubic root of 2131382499 is about 1286.9266619202.

The spelling of 2131382499 in words is "two billion, one hundred thirty-one million, three hundred eighty-two thousand, four hundred ninety-nine".