211032231 has 8 divisors (see below), whose sum is σ = 284766720. Its totient is φ = 138992952.

The previous prime is 211032193. The next prime is 211032233. The reversal of 211032231 is 132230112.

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

It is not a de Polignac number, because 211032231 - 2¹⁰ = 211031207 is a prime.

It is a super-2 number, since 2×211032231² = 89069205041674722, 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 211032231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211032233) 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, 423511 + ... + 424008.

It is an arithmetic number, because the mean of its divisors is an integer number (35595840).

Almost surely, 2^211032231 is an apocalyptic number.

211032231 is a deficient number, since it is larger than the sum of its proper divisors (73734489).

211032231 is an equidigital number, since it uses as much as digits as its factorization.

211032231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847605.

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

The square root of 211032231 is about 14526.9484407428. The cubic root of 211032231 is about 595.3644929080.

Adding to 211032231 its reverse (132230112), we get a palindrome (343262343).

The spelling of 211032231 in words is "two hundred eleven million, thirty-two thousand, two hundred thirty-one".