203450143 has 12 divisors (see below), whose sum is σ = 221030328. Its totient is φ = 187181280.

The previous prime is 203450141. The next prime is 203450171. The reversal of 203450143 is 341054302.

It is not a de Polignac number, because 203450143 - 2¹ = 203450141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203450141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54121 + ... + 57757.

It is an arithmetic number, because the mean of its divisors is an integer number (18419194).

Almost surely, 2^203450143 is an apocalyptic number.

203450143 is a deficient number, since it is larger than the sum of its proper divisors (17580185).

203450143 is a wasteful number, since it uses less digits than its factorization.

203450143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3994 (or 3981 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 203450143 is about 14263.5950236958. The cubic root of 203450143 is about 588.1471539623.

The spelling of 203450143 in words is "two hundred three million, four hundred fifty thousand, one hundred forty-three".