203040293 has 2 divisors, whose sum is σ = 203040294. Its totient is φ = 203040292.

The previous prime is 203040287. The next prime is 203040317. The reversal of 203040293 is 392040302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193293409 + 9746884 = 13903^2 + 3122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203040293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203042293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101520146 + 101520147.

It is an arithmetic number, because the mean of its divisors is an integer number (101520147).

Almost surely, 2^203040293 is an apocalyptic number.

It is an amenable number.

203040293 is a deficient number, since it is larger than the sum of its proper divisors (1).

203040293 is an equidigital number, since it uses as much as digits as its factorization.

203040293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 203040293 is about 14249.2207857132. The cubic root of 203040293 is about 587.7519479506.

Adding to 203040293 its reverse (392040302), we get a palindrome (595080595).

The spelling of 203040293 in words is "two hundred three million, forty thousand, two hundred ninety-three".