203443312049 has 2 divisors, whose sum is σ = 203443312050. Its totient is φ = 203443312048.

The previous prime is 203443312027. The next prime is 203443312063. The reversal of 203443312049 is 940213344302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142264752400 + 61178559649 = 377180^2 + 247343^2 .

It is a cyclic number.

It is not a de Polignac number, because 203443312049 - 2²⁴ = 203426534833 is a prime.

It is a super-3 number, since 3×203443312049³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (203443312069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101721656024 + 101721656025.

It is an arithmetic number, because the mean of its divisors is an integer number (101721656025).

Almost surely, 2^203443312049 is an apocalyptic number.

It is an amenable number.

203443312049 is a deficient number, since it is larger than the sum of its proper divisors (1).

203443312049 is an equidigital number, since it uses as much as digits as its factorization.

203443312049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 203443312049 in words is "two hundred three billion, four hundred forty-three million, three hundred twelve thousand, forty-nine".