214223231 has 4 divisors (see below), whose sum is σ = 215038032. Its totient is φ = 213408432.

The previous prime is 214223221. The next prime is 214223263. The reversal of 214223231 is 132322412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 214223231 - 2¹⁸ = 213961087 is a prime.

It is a super-2 number, since 2×214223231² = 91783185400158722, 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 (214223221) 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, 407006 + ... + 407531.

It is an arithmetic number, because the mean of its divisors is an integer number (53759508).

Almost surely, 2^214223231 is an apocalyptic number.

214223231 is a deficient number, since it is larger than the sum of its proper divisors (814801).

214223231 is an equidigital number, since it uses as much as digits as its factorization.

214223231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814800.

The product of its digits is 576, while the sum is 20.

The square root of 214223231 is about 14636.3667281194. The cubic root of 214223231 is about 598.3503118908.

Adding to 214223231 its reverse (132322412), we get a palindrome (346545643).

The spelling of 214223231 in words is "two hundred fourteen million, two hundred twenty-three thousand, two hundred thirty-one".