2173316999 has 4 divisors (see below), whose sum is σ = 2483790864. Its totient is φ = 1862843136.

The previous prime is 2173316963. The next prime is 2173317001. The reversal of 2173316999 is 9996133712.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2173316999 - 2¹² = 2173312903 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 (2173316099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155236922 + ... + 155236935.

It is an arithmetic number, because the mean of its divisors is an integer number (620947716).

Almost surely, 2^2173316999 is an apocalyptic number.

2173316999 is a deficient number, since it is larger than the sum of its proper divisors (310473865).

2173316999 is an equidigital number, since it uses as much as digits as its factorization.

2173316999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310473864.

The product of its digits is 551124, while the sum is 50.

The square root of 2173316999 is about 46618.8481088926. The cubic root of 2173316999 is about 1295.3119106761.

The spelling of 2173316999 in words is "two billion, one hundred seventy-three million, three hundred sixteen thousand, nine hundred ninety-nine".