213443103449 has 2 divisors, whose sum is σ = 213443103450. Its totient is φ = 213443103448.

The previous prime is 213443103347. The next prime is 213443103457. The reversal of 213443103449 is 944301344312.

213443103449 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., 157573272025 + 55869831424 = 396955^2 + 236368^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213443103449 is a prime.

It is not a weakly prime, because it can be changed into another prime (213443103479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106721551724 + 106721551725.

It is an arithmetic number, because the mean of its divisors is an integer number (106721551725).

Almost surely, 2^213443103449 is an apocalyptic number.

It is an amenable number.

213443103449 is a deficient number, since it is larger than the sum of its proper divisors (1).

213443103449 is an equidigital number, since it uses as much as digits as its factorization.

213443103449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 213443103449 in words is "two hundred thirteen billion, four hundred forty-three million, one hundred three thousand, four hundred forty-nine".