210023231 has 8 divisors (see below), whose sum is σ = 229456128. Its totient is φ = 190647000.

The previous prime is 210023221. The next prime is 210023239. The reversal of 210023231 is 132320012.

It is a happy number.

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 210023231 - 2⁶ = 210023167 is a prime.

It is a super-2 number, since 2×210023231² = 88219515119358722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210023239) 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, 6215 + ... + 21416.

It is an arithmetic number, because the mean of its divisors is an integer number (28682016).

Almost surely, 2^210023231 is an apocalyptic number.

210023231 is a deficient number, since it is larger than the sum of its proper divisors (19432897).

210023231 is a wasteful number, since it uses less digits than its factorization.

210023231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28333.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 210023231 is about 14492.1782696736. The cubic root of 210023231 is about 594.4141124445.

Adding to 210023231 its reverse (132320012), we get a palindrome (342343243).

The spelling of 210023231 in words is "two hundred ten million, twenty-three thousand, two hundred thirty-one".