232288213 has 4 divisors (see below), whose sum is σ = 232335468. Its totient is φ = 232240960.

The previous prime is 232288171. The next prime is 232288229. The reversal of 232288213 is 312882232.

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 93566929 + 138721284 = 9673^2 + 11778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232288213 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 (232288253) 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, 15268 + ... + 26413.

It is an arithmetic number, because the mean of its divisors is an integer number (58083867).

Almost surely, 2^232288213 is an apocalyptic number.

It is an amenable number.

232288213 is a deficient number, since it is larger than the sum of its proper divisors (47255).

232288213 is an equidigital number, since it uses as much as digits as its factorization.

232288213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47254.

The product of its digits is 9216, while the sum is 31.

The square root of 232288213 is about 15241.0043304239. The cubic root of 232288213 is about 614.7177085926.

The spelling of 232288213 in words is "two hundred thirty-two million, two hundred eighty-eight thousand, two hundred thirteen".