172308316 has 6 divisors (see below), whose sum is σ = 301539560. Its totient is φ = 86154156.

The previous prime is 172308313. The next prime is 172308317. The reversal of 172308316 is 613803271.

172308316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172308313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21538536 + ... + 21538543.

Almost surely, 2^172308316 is an apocalyptic number.

It is an amenable number.

172308316 is a deficient number, since it is larger than the sum of its proper divisors (129231244).

172308316 is a wasteful number, since it uses less digits than its factorization.

172308316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43077083 (or 43077081 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 172308316 is about 13126.6262230628. The cubic root of 172308316 is about 556.4618723083.

The spelling of 172308316 in words is "one hundred seventy-two million, three hundred eight thousand, three hundred sixteen".