172715313 has 4 divisors (see below), whose sum is σ = 230287088. Its totient is φ = 115143540.

The previous prime is 172715311. The next prime is 172715321. The reversal of 172715313 is 313517271.

172715313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 172715313 - 2¹ = 172715311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172715311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28785883 + ... + 28785888.

It is an arithmetic number, because the mean of its divisors is an integer number (57571772).

Almost surely, 2^172715313 is an apocalyptic number.

It is an amenable number.

172715313 is a deficient number, since it is larger than the sum of its proper divisors (57571775).

172715313 is an equidigital number, since it uses as much as digits as its factorization.

172715313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57571774.

The product of its digits is 4410, while the sum is 30.

The square root of 172715313 is about 13142.1198061804. The cubic root of 172715313 is about 556.8996539072.

The spelling of 172715313 in words is "one hundred seventy-two million, seven hundred fifteen thousand, three hundred thirteen".