213534240533 has 2 divisors, whose sum is σ = 213534240534. Its totient is φ = 213534240532.

The previous prime is 213534240473. The next prime is 213534240587. The reversal of 213534240533 is 335042435312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199646325124 + 13887915409 = 446818^2 + 117847^2 .

It is a cyclic number.

It is not a de Polignac number, because 213534240533 - 2¹⁰ = 213534239509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213534240493 and 213534240502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213534240593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106767120266 + 106767120267.

It is an arithmetic number, because the mean of its divisors is an integer number (106767120267).

Almost surely, 2^213534240533 is an apocalyptic number.

It is an amenable number.

213534240533 is a deficient number, since it is larger than the sum of its proper divisors (1).

213534240533 is an equidigital number, since it uses as much as digits as its factorization.

213534240533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 213534240533 its reverse (335042435312), we get a palindrome (548576675845).

The spelling of 213534240533 in words is "two hundred thirteen billion, five hundred thirty-four million, two hundred forty thousand, five hundred thirty-three".