2099903931 has 12 divisors (see below), whose sum is σ = 3056350440. Its totient is φ = 1389248640.

The previous prime is 2099903917. The next prime is 2099903963. The reversal of 2099903931 is 1393099902.

It is not a de Polignac number, because 2099903931 - 2⁶ = 2099903867 is a prime.

It is a super-2 number, since 2×2099903931² = 8819193038858505522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2099943931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 889366 + ... + 891723.

It is an arithmetic number, because the mean of its divisors is an integer number (254695870).

Almost surely, 2^2099903931 is an apocalyptic number.

2099903931 is a deficient number, since it is larger than the sum of its proper divisors (956446509).

2099903931 is a wasteful number, since it uses less digits than its factorization.

2099903931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781226 (or 1781223 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 45.

The square root of 2099903931 is about 45824.7087388452. The cubic root of 2099903931 is about 1280.5596370770.

The spelling of 2099903931 in words is "two billion, ninety-nine million, nine hundred three thousand, nine hundred thirty-one".