203124243 has 16 divisors (see below), whose sum is σ = 311426816. Its totient is φ = 115356960.

The previous prime is 203124227. The next prime is 203124263. The reversal of 203124243 is 342421302.

203124243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 203124243 - 2⁴ = 203124227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203124203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26248 + ... + 33093.

It is an arithmetic number, because the mean of its divisors is an integer number (19464176).

Almost surely, 2^203124243 is an apocalyptic number.

203124243 is a deficient number, since it is larger than the sum of its proper divisors (108302573).

203124243 is a wasteful number, since it uses less digits than its factorization.

203124243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59514.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 203124243 is about 14252.1662563977. The cubic root of 203124243 is about 587.8329416891.

Adding to 203124243 its reverse (342421302), we get a palindrome (545545545).

The spelling of 203124243 in words is "two hundred three million, one hundred twenty-four thousand, two hundred forty-three".