2162231 has 2 divisors, whose sum is σ = 2162232. Its totient is φ = 2162230.

The previous prime is 2162221. The next prime is 2162239. The reversal of 2162231 is 1322612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2162231 is a prime.

It is a super-2 number, since 2×2162231² = 9350485794722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2162239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081115 + 1081116.

It is an arithmetic number, because the mean of its divisors is an integer number (1081116).

2^2162231 is an apocalyptic number.

2162231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2162231 is an equidigital number, since it uses as much as digits as its factorization.

2162231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2162231 is about 1470.4526513968. The cubic root of 2162231 is about 129.3105711232.

Adding to 2162231 its reverse (1322612), we get a palindrome (3484843).

The spelling of 2162231 in words is "two million, one hundred sixty-two thousand, two hundred thirty-one".