2211173231 has 2 divisors, whose sum is σ = 2211173232. Its totient is φ = 2211173230.

The previous prime is 2211173191. The next prime is 2211173249. The reversal of 2211173231 is 1323711122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211173231 is a prime.

It is a super-2 number, since 2×2211173231² = 9778574114981958722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2211173197 and 2211173206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211170231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105586615 + 1105586616.

It is an arithmetic number, because the mean of its divisors is an integer number (1105586616).

Almost surely, 2^2211173231 is an apocalyptic number.

2211173231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211173231 is an equidigital number, since it uses as much as digits as its factorization.

2211173231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 23.

The square root of 2211173231 is about 47023.1137952390. The cubic root of 2211173231 is about 1302.7895190865.

Adding to 2211173231 its reverse (1323711122), we get a palindrome (3534884353).

The spelling of 2211173231 in words is "two billion, two hundred eleven million, one hundred seventy-three thousand, two hundred thirty-one".