203030249 has 2 divisors, whose sum is σ = 203030250. Its totient is φ = 203030248.

The previous prime is 203030239. The next prime is 203030263. The reversal of 203030249 is 942030302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202920025 + 110224 = 14245^2 + 332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203030249 is a prime.

It is not a weakly prime, because it can be changed into another prime (203030239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101515124 + 101515125.

It is an arithmetic number, because the mean of its divisors is an integer number (101515125).

Almost surely, 2^203030249 is an apocalyptic number.

It is an amenable number.

203030249 is a deficient number, since it is larger than the sum of its proper divisors (1).

203030249 is an equidigital number, since it uses as much as digits as its factorization.

203030249 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 203030249 is about 14248.8683410298. The cubic root of 203030249 is about 587.7422561503.

The spelling of 203030249 in words is "two hundred three million, thirty thousand, two hundred forty-nine".