2109431333 has 8 divisors (see below), whose sum is σ = 2126458008. Its totient is φ = 2092428544.

The previous prime is 2109431297. The next prime is 2109431339. The reversal of 2109431333 is 3331349012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 677717089 + 1431714244 = 26033^2 + 37838^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2109431333 - 2¹⁸ = 2109169189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2109431296 and 2109431305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109431339) 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, 199385 + ... + 209697.

It is an arithmetic number, because the mean of its divisors is an integer number (265807251).

Almost surely, 2^2109431333 is an apocalyptic number.

It is an amenable number.

2109431333 is a deficient number, since it is larger than the sum of its proper divisors (17026675).

2109431333 is a wasteful number, since it uses less digits than its factorization.

2109431333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11943.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 2109431333 is about 45928.5459491153. The cubic root of 2109431333 is about 1282.4933765666.

The spelling of 2109431333 in words is "two billion, one hundred nine million, four hundred thirty-one thousand, three hundred thirty-three".