211132231 has 8 divisors (see below), whose sum is σ = 227770704. Its totient is φ = 194962560.

The previous prime is 211132223. The next prime is 211132253. The reversal of 211132231 is 132231112.

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 211132231 - 2³ = 211132223 is a prime.

It is a super-2 number, since 2×211132231² = 89153637934074722, 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 (211132211) 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, 116265 + ... + 118066.

It is an arithmetic number, because the mean of its divisors is an integer number (28471338).

Almost surely, 2^211132231 is an apocalyptic number.

211132231 is a deficient number, since it is larger than the sum of its proper divisors (16638473).

211132231 is a wasteful number, since it uses less digits than its factorization.

211132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234401.

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

The square root of 211132231 is about 14530.3899121806. The cubic root of 211132231 is about 595.4585181152.

Adding to 211132231 its reverse (132231112), we get a palindrome (343363343).

The spelling of 211132231 in words is "two hundred eleven million, one hundred thirty-two thousand, two hundred thirty-one".