231132211 has 8 divisors (see below), whose sum is σ = 238946400. Its totient is φ = 223421760.

The previous prime is 231132203. The next prime is 231132217. The reversal of 231132211 is 112231132.

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 231132211 - 2³ = 231132203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231132217) 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, 21391 + ... + 30328.

It is an arithmetic number, because the mean of its divisors is an integer number (29868300).

Almost surely, 2^231132211 is an apocalyptic number.

231132211 is a deficient number, since it is larger than the sum of its proper divisors (7814189).

231132211 is a wasteful number, since it uses less digits than its factorization.

231132211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51869.

The product of its digits is 72, while the sum is 16.

The square root of 231132211 is about 15203.0329539865. The cubic root of 231132211 is about 613.6962806961.

Adding to 231132211 its reverse (112231132), we get a palindrome (343363343).

The spelling of 231132211 in words is "two hundred thirty-one million, one hundred thirty-two thousand, two hundred eleven".