213235343533 has 4 divisors (see below), whose sum is σ = 213240339900. Its totient is φ = 213230347168.

The previous prime is 213235343507. The next prime is 213235343579. The reversal of 213235343533 is 335343532312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77692085289 + 135543258244 = 278733^2 + 368162^2 .

It is a cyclic number.

It is not a de Polignac number, because 213235343533 - 2³³ = 204645408941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213235343492 and 213235343501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213235349533) 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 in 3 ways as a sum of consecutive naturals, for example, 2433610 + ... + 2519707.

It is an arithmetic number, because the mean of its divisors is an integer number (53310084975).

Almost surely, 2^213235343533 is an apocalyptic number.

It is an amenable number.

213235343533 is a deficient number, since it is larger than the sum of its proper divisors (4996367).

213235343533 is an equidigital number, since it uses as much as digits as its factorization.

213235343533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4996366.

The product of its digits is 291600, while the sum is 37.

Adding to 213235343533 its reverse (335343532312), we get a palindrome (548578875845).

The spelling of 213235343533 in words is "two hundred thirteen billion, two hundred thirty-five million, three hundred forty-three thousand, five hundred thirty-three".