2211032231 has 4 divisors (see below), whose sum is σ = 2211356112. Its totient is φ = 2210708352.

The previous prime is 2211032221. The next prime is 2211032267. The reversal of 2211032231 is 1322301122.

2211032231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211032231 is a prime.

It is a super-2 number, since 2×2211032231² = 9777327053041674722, 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 (2211032221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151475 + ... + 165428.

It is an arithmetic number, because the mean of its divisors is an integer number (552839028).

Almost surely, 2^2211032231 is an apocalyptic number.

2211032231 is a deficient number, since it is larger than the sum of its proper divisors (323881).

2211032231 is an equidigital number, since it uses as much as digits as its factorization.

2211032231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323880.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2211032231 is about 47021.6145086491. The cubic root of 2211032231 is about 1302.7618268152.

Adding to 2211032231 its reverse (1322301122), we get a palindrome (3533333353).

The spelling of 2211032231 in words is "two billion, two hundred eleven million, thirty-two thousand, two hundred thirty-one".