172131203 has 8 divisors (see below), whose sum is σ = 184162320. Its totient is φ = 160397280.

The previous prime is 172131187. The next prime is 172131209. The reversal of 172131203 is 302131271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172131203 - 2⁴ = 172131187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172131209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73100 + ... + 75417.

It is an arithmetic number, because the mean of its divisors is an integer number (23020290).

Almost surely, 2^172131203 is an apocalyptic number.

172131203 is a deficient number, since it is larger than the sum of its proper divisors (12031117).

172131203 is a wasteful number, since it uses less digits than its factorization.

172131203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148597.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 172131203 is about 13119.8781625440. The cubic root of 172131203 is about 556.2711474854.

Adding to 172131203 its reverse (302131271), we get a palindrome (474262474).

The spelling of 172131203 in words is "one hundred seventy-two million, one hundred thirty-one thousand, two hundred three".