203005172 has 12 divisors (see below), whose sum is σ = 358708896. Its totient is φ = 100516920.

The previous prime is 203005171. The next prime is 203005181. The reversal of 203005172 is 271500302.

203005172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×203005172² = 82422199717499168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203005171) 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, 245954 + ... + 246777.

It is an arithmetic number, because the mean of its divisors is an integer number (29892408).

Almost surely, 2^203005172 is an apocalyptic number.

It is an amenable number.

203005172 is a deficient number, since it is larger than the sum of its proper divisors (155703724).

203005172 is a wasteful number, since it uses less digits than its factorization.

203005172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492838 (or 492836 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 203005172 is about 14247.9883492372. The cubic root of 203005172 is about 587.7180570970.

Adding to 203005172 its reverse (271500302), we get a palindrome (474505474).

The spelling of 203005172 in words is "two hundred three million, five thousand, one hundred seventy-two".