211230231 has 8 divisors (see below), whose sum is σ = 281737344. Its totient is φ = 140771640.

The previous prime is 211230221. The next prime is 211230247. The reversal of 211230231 is 132032112.

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

It is not a de Polignac number, because 211230231 - 2⁵ = 211230199 is a prime.

It is a super-2 number, since 2×211230231² = 89236420976626722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211230231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211230221) 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, 331 + ... + 20556.

It is an arithmetic number, because the mean of its divisors is an integer number (35217168).

Almost surely, 2^211230231 is an apocalyptic number.

211230231 is a deficient number, since it is larger than the sum of its proper divisors (70507113).

211230231 is a wasteful number, since it uses less digits than its factorization.

211230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24261.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 211230231 is about 14533.7617635628. The cubic root of 211230231 is about 595.5506340183.

Adding to 211230231 its reverse (132032112), we get a palindrome (343262343).

The spelling of 211230231 in words is "two hundred eleven million, two hundred thirty thousand, two hundred thirty-one".