203890133 has 8 divisors (see below), whose sum is σ = 209888448. Its totient is φ = 197949024.

The previous prime is 203890109. The next prime is 203890139. The reversal of 203890133 is 331098302.

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

It is a cyclic number.

It is not a de Polignac number, because 203890133 - 2¹⁴ = 203873749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 203890096 and 203890105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203890139) 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, 7016 + ... + 21377.

It is an arithmetic number, because the mean of its divisors is an integer number (26236056).

Almost surely, 2^203890133 is an apocalyptic number.

It is an amenable number.

203890133 is a deficient number, since it is larger than the sum of its proper divisors (5998315).

203890133 is a wasteful number, since it uses less digits than its factorization.

203890133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28603.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 203890133 is about 14279.0102248020. The cubic root of 203890133 is about 588.5708327689.

The spelling of 203890133 in words is "two hundred three million, eight hundred ninety thousand, one hundred thirty-three".