172631227 has 8 divisors (see below), whose sum is σ = 176947200. Its totient is φ = 168361704.

The previous prime is 172631183. The next prime is 172631299. The reversal of 172631227 is 722136271.

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 172631227 - 2⁷ = 172631099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172638227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4027 + ... + 19012.

It is an arithmetic number, because the mean of its divisors is an integer number (22118400).

Almost surely, 2^172631227 is an apocalyptic number.

172631227 is a deficient number, since it is larger than the sum of its proper divisors (4315973).

172631227 is a wasteful number, since it uses less digits than its factorization.

172631227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23225.

The product of its digits is 7056, while the sum is 31.

The square root of 172631227 is about 13138.9203133286. The cubic root of 172631227 is about 556.8092641886.

Adding to 172631227 its reverse (722136271), we get a palindrome (894767498).

The spelling of 172631227 in words is "one hundred seventy-two million, six hundred thirty-one thousand, two hundred twenty-seven".