213113233 has 4 divisors (see below), whose sum is σ = 213145600. Its totient is φ = 213080868.

The previous prime is 213113231. The next prime is 213113269. The reversal of 213113233 is 332311312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213113233 - 2¹ = 213113231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213113233.

It is not an unprimeable number, because it can be changed into a prime (213113231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2385 + ... + 20782.

It is an arithmetic number, because the mean of its divisors is an integer number (53286400).

Almost surely, 2^213113233 is an apocalyptic number.

It is an amenable number.

213113233 is a deficient number, since it is larger than the sum of its proper divisors (32367).

213113233 is an equidigital number, since it uses as much as digits as its factorization.

213113233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32366.

The product of its digits is 324, while the sum is 19.

The square root of 213113233 is about 14598.3983025536. The cubic root of 213113233 is about 597.3150707725.

Adding to 213113233 its reverse (332311312), we get a palindrome (545424545).

The spelling of 213113233 in words is "two hundred thirteen million, one hundred thirteen thousand, two hundred thirty-three".