2100317872 has 40 divisors (see below), whose sum is σ = 4171161600. Its totient is φ = 1024172352.

The previous prime is 2100317861. The next prime is 2100317881. The reversal of 2100317872 is 2787130012.

It is a super-2 number, since 2×2100317872² = 8822670326885216768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111129 + ... + 128647.

It is an arithmetic number, because the mean of its divisors is an integer number (104279040).

Almost surely, 2^2100317872 is an apocalyptic number.

It is an amenable number.

2100317872 is a deficient number, since it is larger than the sum of its proper divisors (2070843728).

2100317872 is a wasteful number, since it uses less digits than its factorization.

2100317872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17713 (or 17707 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 2100317872 is about 45829.2250861827. The cubic root of 2100317872 is about 1280.6437744674.

Adding to 2100317872 its reverse (2787130012), we get a palindrome (4887447884).

The spelling of 2100317872 in words is "two billion, one hundred million, three hundred seventeen thousand, eight hundred seventy-two".