203143243 has 2 divisors, whose sum is σ = 203143244. Its totient is φ = 203143242.

The previous prime is 203143201. The next prime is 203143253. The reversal of 203143243 is 342341302.

It is a happy number.

203143243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203143243 - 2¹⁷ = 203012171 is a prime.

It is not a weakly prime, because it can be changed into another prime (203143253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101571621 + 101571622.

It is an arithmetic number, because the mean of its divisors is an integer number (101571622).

Almost surely, 2^203143243 is an apocalyptic number.

203143243 is a deficient number, since it is larger than the sum of its proper divisors (1).

203143243 is an equidigital number, since it uses as much as digits as its factorization.

203143243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 203143243 is about 14252.8328061477. The cubic root of 203143243 is about 587.8512695157.

Adding to 203143243 its reverse (342341302), we get a palindrome (545484545).

The spelling of 203143243 in words is "two hundred three million, one hundred forty-three thousand, two hundred forty-three".