213043305133 has 2 divisors, whose sum is σ = 213043305134. Its totient is φ = 213043305132.

The previous prime is 213043305107. The next prime is 213043305191. The reversal of 213043305133 is 331503340312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135256979529 + 77786325604 = 367773^2 + 278902^2 .

It is a cyclic number.

It is not a de Polignac number, because 213043305133 - 2¹³ = 213043296941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213043305833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106521652566 + 106521652567.

It is an arithmetic number, because the mean of its divisors is an integer number (106521652567).

Almost surely, 2^213043305133 is an apocalyptic number.

It is an amenable number.

213043305133 is a deficient number, since it is larger than the sum of its proper divisors (1).

213043305133 is an equidigital number, since it uses as much as digits as its factorization.

213043305133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 28.

Adding to 213043305133 its reverse (331503340312), we get a palindrome (544546645445).

The spelling of 213043305133 in words is "two hundred thirteen billion, forty-three million, three hundred five thousand, one hundred thirty-three".