2031916009 has 4 divisors (see below), whose sum is σ = 2032264080. Its totient is φ = 2031567940.

The previous prime is 2031915971. The next prime is 2031916021. The reversal of 2031916009 is 9006191302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2031916009 - 2⁷ = 2031915881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031914009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165127 + ... + 177004.

It is an arithmetic number, because the mean of its divisors is an integer number (508066020).

Almost surely, 2^2031916009 is an apocalyptic number.

It is an amenable number.

2031916009 is a deficient number, since it is larger than the sum of its proper divisors (348071).

2031916009 is an equidigital number, since it uses as much as digits as its factorization.

2031916009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348070.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 2031916009 is about 45076.7790442041. The cubic root of 2031916009 is about 1266.5876546822.

The spelling of 2031916009 in words is "two billion, thirty-one million, nine hundred sixteen thousand, nine".