4321111231 has 2 divisors, whose sum is σ = 4321111232. Its totient is φ = 4321111230.

The previous prime is 4321111213. The next prime is 4321111243. The reversal of 4321111231 is 1321111234.

Together with previous prime (4321111213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4321111231 - 2¹¹ = 4321109183 is a prime.

It is a super-2 number, since 2×4321111231² = 37344004541348670722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4321111199 and 4321111208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4321111831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2160555615 + 2160555616.

It is an arithmetic number, because the mean of its divisors is an integer number (2160555616).

Almost surely, 2^4321111231 is an apocalyptic number.

4321111231 is a deficient number, since it is larger than the sum of its proper divisors (1).

4321111231 is an equidigital number, since it uses as much as digits as its factorization.

4321111231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

The square root of 4321111231 is about 65735.1597777019. The cubic root of 4321111231 is about 1628.7902035870.

Adding to 4321111231 its reverse (1321111234), we get a palindrome (5642222465).

The spelling of 4321111231 in words is "four billion, three hundred twenty-one million, one hundred eleven thousand, two hundred thirty-one".