213113133 has 16 divisors (see below), whose sum is σ = 321076800. Its totient is φ = 139666320.

The previous prime is 213113111. The next prime is 213113137. The reversal of 213113133 is 331311312.

It is a happy number.

It is not a de Polignac number, because 213113133 - 2⁸ = 213112877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213113137) 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, 65298 + ... + 68483.

It is an arithmetic number, because the mean of its divisors is an integer number (20067300).

Almost surely, 2^213113133 is an apocalyptic number.

It is an amenable number.

213113133 is a deficient number, since it is larger than the sum of its proper divisors (107963667).

213113133 is a wasteful number, since it uses less digits than its factorization.

213113133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133849 (or 133843 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 213113133 is about 14598.3948775199. The cubic root of 213113133 is about 597.3149773456.

Adding to 213113133 its reverse (331311312), we get a palindrome (544424445).

The spelling of 213113133 in words is "two hundred thirteen million, one hundred thirteen thousand, one hundred thirty-three".