172418723 has 2 divisors, whose sum is σ = 172418724. Its totient is φ = 172418722.

The previous prime is 172418669. The next prime is 172418767. The reversal of 172418723 is 327814271.

172418723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172418723 - 2¹⁰ = 172417699 is a prime.

It is not a weakly prime, because it can be changed into another prime (172418023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86209361 + 86209362.

It is an arithmetic number, because the mean of its divisors is an integer number (86209362).

Almost surely, 2^172418723 is an apocalyptic number.

172418723 is a deficient number, since it is larger than the sum of its proper divisors (1).

172418723 is an equidigital number, since it uses as much as digits as its factorization.

172418723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 35.

The square root of 172418723 is about 13130.8310094982. The cubic root of 172418723 is about 556.5806983947.

The spelling of 172418723 in words is "one hundred seventy-two million, four hundred eighteen thousand, seven hundred twenty-three".