211204231 has 8 divisors (see below), whose sum is σ = 243766944. Its totient is φ = 179239200.

The previous prime is 211204219. The next prime is 211204241. The reversal of 211204231 is 132402112.

211204231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 211204231 - 2⁵ = 211204199 is a prime.

It is a super-2 number, since 2×211204231² = 89214454384602722, 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 (211204241) 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, 148660 + ... + 150073.

It is an arithmetic number, because the mean of its divisors is an integer number (30470868).

Almost surely, 2^211204231 is an apocalyptic number.

211204231 is a deficient number, since it is larger than the sum of its proper divisors (32562713).

211204231 is a wasteful number, since it uses less digits than its factorization.

211204231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298841.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 211204231 is about 14532.8672669917. The cubic root of 211204231 is about 595.5261978824.

Adding to 211204231 its reverse (132402112), we get a palindrome (343606343).

The spelling of 211204231 in words is "two hundred eleven million, two hundred four thousand, two hundred thirty-one".