203242313 has 2 divisors, whose sum is σ = 203242314. Its totient is φ = 203242312.

The previous prime is 203242279. The next prime is 203242321. The reversal of 203242313 is 313242302.

203242313 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 can be written as a sum of positive squares in only one way, i.e., 195244729 + 7997584 = 13973^2 + 2828^2 .

It is a cyclic number.

It is not a de Polignac number, because 203242313 - 2¹⁴ = 203225929 is a prime.

It is not a weakly prime, because it can be changed into another prime (203242343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101621156 + 101621157.

It is an arithmetic number, because the mean of its divisors is an integer number (101621157).

Almost surely, 2^203242313 is an apocalyptic number.

It is an amenable number.

203242313 is a deficient number, since it is larger than the sum of its proper divisors (1).

203242313 is an equidigital number, since it uses as much as digits as its factorization.

203242313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 203242313 is about 14256.3078319739. The cubic root of 203242313 is about 587.9468161517.

Adding to 203242313 its reverse (313242302), we get a palindrome (516484615).

The spelling of 203242313 in words is "two hundred three million, two hundred forty-two thousand, three hundred thirteen".