172280317 has 16 divisors (see below), whose sum is σ = 192975552. Its totient is φ = 152449920.

The previous prime is 172280291. The next prime is 172280321. The reversal of 172280317 is 713082271.

It is a cyclic number.

It is not a de Polignac number, because 172280317 - 2²³ = 163891709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172280117) 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, 215763 + ... + 216559.

It is an arithmetic number, because the mean of its divisors is an integer number (12060972).

Almost surely, 2^172280317 is an apocalyptic number.

It is an amenable number.

172280317 is a deficient number, since it is larger than the sum of its proper divisors (20695235).

172280317 is a wasteful number, since it uses less digits than its factorization.

172280317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 172280317 is about 13125.5596833049. The cubic root of 172280317 is about 556.4317301764.

The spelling of 172280317 in words is "one hundred seventy-two million, two hundred eighty thousand, three hundred seventeen".