172473231 has 16 divisors (see below), whose sum is σ = 266418944. Its totient is φ = 97205184.

The previous prime is 172473157. The next prime is 172473233. The reversal of 172473231 is 132374271.

It is not a de Polignac number, because 172473231 - 2⁹ = 172472719 is a prime.

It is a super-2 number, since 2×172473231² = 59494030823158722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172473233) 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 15 ways as a sum of consecutive naturals, for example, 54721 + ... + 57786.

It is an arithmetic number, because the mean of its divisors is an integer number (16651184).

Almost surely, 2^172473231 is an apocalyptic number.

172473231 is a deficient number, since it is larger than the sum of its proper divisors (93945713).

172473231 is a wasteful number, since it uses less digits than its factorization.

172473231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112590.

The product of its digits is 7056, while the sum is 30.

The square root of 172473231 is about 13132.9064186112. The cubic root of 172473231 is about 556.6393441994.

The spelling of 172473231 in words is "one hundred seventy-two million, four hundred seventy-three thousand, two hundred thirty-one".