2161310504 has 32 divisors (see below), whose sum is σ = 4293469800. Its totient is φ = 1016463360.

The previous prime is 2161310467. The next prime is 2161310507. The reversal of 2161310504 is 4050131612.

It can be written as a sum of positive squares in 4 ways, for example, as 1933360900 + 227949604 = 43970^2 + 15098^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2161310504.

It is not an unprimeable number, because it can be changed into a prime (2161310507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277544 + ... + 285224.

Almost surely, 2^2161310504 is an apocalyptic number.

It is an amenable number.

2161310504 is a deficient number, since it is larger than the sum of its proper divisors (2132159296).

2161310504 is a wasteful number, since it uses less digits than its factorization.

2161310504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9773 (or 9769 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2161310504 is about 46489.8967948951. The cubic root of 2161310504 is about 1292.9221866555.

The spelling of 2161310504 in words is "two billion, one hundred sixty-one million, three hundred ten thousand, five hundred four".