213032231 has 8 divisors (see below), whose sum is σ = 220548720. Its totient is φ = 205527168.

The previous prime is 213032227. The next prime is 213032251. The reversal of 213032231 is 132230312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213032231 - 2² = 213032227 is a prime.

It is a super-2 number, since 2×213032231² = 90765462889674722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213032221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55775 + ... + 59471.

It is an arithmetic number, because the mean of its divisors is an integer number (27568590).

Almost surely, 2^213032231 is an apocalyptic number.

213032231 is a deficient number, since it is larger than the sum of its proper divisors (7516489).

213032231 is a wasteful number, since it uses less digits than its factorization.

213032231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5713.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 213032231 is about 14595.6236934226. The cubic root of 213032231 is about 597.2393835490.

Adding to 213032231 its reverse (132230312), we get a palindrome (345262543).

The spelling of 213032231 in words is "two hundred thirteen million, thirty-two thousand, two hundred thirty-one".