1135205213 has 16 divisors (see below), whose sum is σ = 1182451200. Its totient is φ = 1088683200.

The previous prime is 1135205207. The next prime is 1135205221. The reversal of 1135205213 is 3125025311.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1135205213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135205233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3252563 + ... + 3252911.

It is an arithmetic number, because the mean of its divisors is an integer number (73903200).

Almost surely, 2^1135205213 is an apocalyptic number.

It is an amenable number.

1135205213 is a deficient number, since it is larger than the sum of its proper divisors (47245987).

1135205213 is a wasteful number, since it uses less digits than its factorization.

1135205213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1135205213 is about 33692.8065467987. The cubic root of 1135205213 is about 1043.1772941036.

The spelling of 1135205213 in words is "one billion, one hundred thirty-five million, two hundred five thousand, two hundred thirteen".