232012213 has 4 divisors (see below), whose sum is σ = 232043308. Its totient is φ = 231981120.

The previous prime is 232012199. The next prime is 232012229. The reversal of 232012213 is 312210232.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 25170289 + 206841924 = 5017^2 + 14382^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232012213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232012813) 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, 3103 + ... + 21763.

It is an arithmetic number, because the mean of its divisors is an integer number (58010827).

Almost surely, 2^232012213 is an apocalyptic number.

It is an amenable number.

232012213 is a deficient number, since it is larger than the sum of its proper divisors (31095).

232012213 is a wasteful number, since it uses less digits than its factorization.

232012213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31094.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 232012213 is about 15231.9471178179. The cubic root of 232012213 is about 614.4741471909.

Adding to 232012213 its reverse (312210232), we get a palindrome (544222445).

The spelling of 232012213 in words is "two hundred thirty-two million, twelve thousand, two hundred thirteen".