2172324723 has 16 divisors (see below), whose sum is σ = 3104054016. Its totient is φ = 1347809760.

The previous prime is 2172324653. The next prime is 2172324757. The reversal of 2172324723 is 3274232712.

2172324723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2172324723 - 2⁹ = 2172324211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2172324793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422893 + ... + 427998.

It is an arithmetic number, because the mean of its divisors is an integer number (194003376).

Almost surely, 2^2172324723 is an apocalyptic number.

2172324723 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2172324723 is a deficient number, since it is larger than the sum of its proper divisors (931729293).

2172324723 is a wasteful number, since it uses less digits than its factorization.

2172324723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850954.

The product of its digits is 28224, while the sum is 33.

The square root of 2172324723 is about 46608.2044601592. The cubic root of 2172324723 is about 1295.1147462214.

The spelling of 2172324723 in words is "two billion, one hundred seventy-two million, three hundred twenty-four thousand, seven hundred twenty-three".