203172112 has 40 divisors (see below), whose sum is σ = 462470400. Its totient is φ = 85246080.

The previous prime is 203172091. The next prime is 203172113. The reversal of 203172112 is 211271302.

203172112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 203172112.

It is not an unprimeable number, because it can be changed into a prime (203172113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42112 + ... + 46687.

It is an arithmetic number, because the mean of its divisors is an integer number (11561760).

Almost surely, 2^203172112 is an apocalyptic number.

203172112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

203172112 is an abundant number, since it is smaller than the sum of its proper divisors (259298288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203172112 is a wasteful number, since it uses less digits than its factorization.

203172112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88831 (or 88825 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 203172112 is about 14253.8455162107. The cubic root of 203172112 is about 587.8791150139.

The spelling of 203172112 in words is "two hundred three million, one hundred seventy-two thousand, one hundred twelve".