203213243 has 2 divisors, whose sum is σ = 203213244. Its totient is φ = 203213242.

The previous prime is 203213209. The next prime is 203213251. The reversal of 203213243 is 342312302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203213243 - 2¹² = 203209147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (203213273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101606621 + 101606622.

It is an arithmetic number, because the mean of its divisors is an integer number (101606622).

Almost surely, 2^203213243 is an apocalyptic number.

203213243 is a deficient number, since it is larger than the sum of its proper divisors (1).

203213243 is an equidigital number, since it uses as much as digits as its factorization.

203213243 is an odious number, because the sum of its binary digits is odd.

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

The square root of 203213243 is about 14255.2882468227. The cubic root of 203213243 is about 587.9187832278.

Adding to 203213243 its reverse (342312302), we get a palindrome (545525545).

The spelling of 203213243 in words is "two hundred three million, two hundred thirteen thousand, two hundred forty-three".