172331008 has 26 divisors (see below), whose sum is σ = 344628134. Its totient is φ = 86163456.

The previous prime is 172330993. The next prime is 172331011. The reversal of 172331008 is 800133271.

It can be written as a sum of positive squares in only one way, i.e., 100962304 + 71368704 = 10048^2 + 8448^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16941 + ... + 25132.

Almost surely, 2^172331008 is an apocalyptic number.

It is an amenable number.

172331008 is a deficient number, since it is larger than the sum of its proper divisors (172297126).

172331008 is an frugal number, since it uses more digits than its factorization.

172331008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42097 (or 42075 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 172331008 is about 13127.4905446548. The cubic root of 172331008 is about 556.4862988301.

Adding to 172331008 its reverse (800133271), we get a palindrome (972464279).

The spelling of 172331008 in words is "one hundred seventy-two million, three hundred thirty-one thousand, eight".