213330231 has 12 divisors (see below), whose sum is σ = 309867480. Its totient is φ = 141424560.

The previous prime is 213330209. The next prime is 213330239. The reversal of 213330231 is 132033312.

It is not a de Polignac number, because 213330231 - 2⁵ = 213330199 is a prime.

It is a super-2 number, since 2×213330231² = 91019574917026722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213330239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64600 + ... + 67821.

It is an arithmetic number, because the mean of its divisors is an integer number (25822290).

Almost surely, 2^213330231 is an apocalyptic number.

213330231 is a deficient number, since it is larger than the sum of its proper divisors (96537249).

213330231 is a wasteful number, since it uses less digits than its factorization.

213330231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132606 (or 132603 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 213330231 is about 14605.8286652966. The cubic root of 213330231 is about 597.5177364412.

Adding to 213330231 its reverse (132033312), we get a palindrome (345363543).

The spelling of 213330231 in words is "two hundred thirteen million, three hundred thirty thousand, two hundred thirty-one".