203240263 has 2 divisors, whose sum is σ = 203240264. Its totient is φ = 203240262.

The previous prime is 203240251. The next prime is 203240273. The reversal of 203240263 is 362042302.

It is a happy number.

203240263 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 a de Polignac number, because none of the positive numbers 2^k-203240263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203240243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101620131 + 101620132.

It is an arithmetic number, because the mean of its divisors is an integer number (101620132).

Almost surely, 2^203240263 is an apocalyptic number.

203240263 is a deficient number, since it is larger than the sum of its proper divisors (1).

203240263 is an equidigital number, since it uses as much as digits as its factorization.

203240263 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 203240263 is about 14256.2359337940. The cubic root of 203240263 is about 587.9448393733.

Adding to 203240263 its reverse (362042302), we get a palindrome (565282565).

The spelling of 203240263 in words is "two hundred three million, two hundred forty thousand, two hundred sixty-three".