2109431807 has 8 divisors (see below), whose sum is σ = 2411077632. Its totient is φ = 1807860600.

The previous prime is 2109431801. The next prime is 2109431869. The reversal of 2109431807 is 7081349012.

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

It is not a de Polignac number, because 2109431807 - 2²² = 2105237503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109431801) 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, 70082 + ... + 95552.

It is an arithmetic number, because the mean of its divisors is an integer number (301384704).

Almost surely, 2^2109431807 is an apocalyptic number.

2109431807 is a deficient number, since it is larger than the sum of its proper divisors (301645825).

2109431807 is a wasteful number, since it uses less digits than its factorization.

2109431807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37309.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 2109431807 is about 45928.5511093045. The cubic root of 2109431807 is about 1282.4934726276.

The spelling of 2109431807 in words is "two billion, one hundred nine million, four hundred thirty-one thousand, eight hundred seven".