203039393 has 2 divisors, whose sum is σ = 203039394. Its totient is φ = 203039392.

The previous prime is 203039383. The next prime is 203039399. The reversal of 203039393 is 393930302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137639824 + 65399569 = 11732^2 + 8087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203039393 is a prime.

It is not a weakly prime, because it can be changed into another prime (203039399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101519696 + 101519697.

It is an arithmetic number, because the mean of its divisors is an integer number (101519697).

Almost surely, 2^203039393 is an apocalyptic number.

It is an amenable number.

203039393 is a deficient number, since it is larger than the sum of its proper divisors (1).

203039393 is an equidigital number, since it uses as much as digits as its factorization.

203039393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 32.

The square root of 203039393 is about 14249.1892050039. The cubic root of 203039393 is about 587.7510795227.

Adding to 203039393 its reverse (393930302), we get a palindrome (596969695).

The spelling of 203039393 in words is "two hundred three million, thirty-nine thousand, three hundred ninety-three".