231100211 has 8 divisors (see below), whose sum is σ = 243409920. Its totient is φ = 218805192.

The previous prime is 231100171. The next prime is 231100213. The reversal of 231100211 is 112001132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231100211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231100192 and 231100201.

It is not an unprimeable number, because it can be changed into a prime (231100213) 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, 45926 + ... + 50708.

It is an arithmetic number, because the mean of its divisors is an integer number (30426240).

Almost surely, 2^231100211 is an apocalyptic number.

231100211 is a deficient number, since it is larger than the sum of its proper divisors (12309709).

231100211 is a wasteful number, since it uses less digits than its factorization.

231100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7345.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 231100211 is about 15201.9804959749. The cubic root of 231100211 is about 613.6679575310.

Adding to 231100211 its reverse (112001132), we get a palindrome (343101343).

The spelling of 231100211 in words is "two hundred thirty-one million, one hundred thousand, two hundred eleven".