172831893 has 8 divisors (see below), whose sum is σ = 248168928. Its totient is φ = 106358064.

The previous prime is 172831873. The next prime is 172831903. The reversal of 172831893 is 398138271.

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

It is not a de Polignac number, because 172831893 - 2⁵ = 172831861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172831853) 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, 2215755 + ... + 2215832.

It is an arithmetic number, because the mean of its divisors is an integer number (31021116).

Almost surely, 2^172831893 is an apocalyptic number.

172831893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

172831893 is a deficient number, since it is larger than the sum of its proper divisors (75337035).

172831893 is a wasteful number, since it uses less digits than its factorization.

172831893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4431603.

The product of its digits is 72576, while the sum is 42.

The square root of 172831893 is about 13146.5544155113. The cubic root of 172831893 is about 557.0249250998.

The spelling of 172831893 in words is "one hundred seventy-two million, eight hundred thirty-one thousand, eight hundred ninety-three".