220110031 has 2 divisors, whose sum is σ = 220110032. Its totient is φ = 220110030.

The previous prime is 220110001. The next prime is 220110049. The reversal of 220110031 is 130011022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220110031 is a prime.

It is a super-2 number, since 2×220110031² = 96896851493641922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220110001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055015 + 110055016.

It is an arithmetic number, because the mean of its divisors is an integer number (110055016).

Almost surely, 2^220110031 is an apocalyptic number.

220110031 is a deficient number, since it is larger than the sum of its proper divisors (1).

220110031 is an equidigital number, since it uses as much as digits as its factorization.

220110031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 220110031 is about 14836.1056547869. The cubic root of 220110031 is about 603.7816987731.

Adding to 220110031 its reverse (130011022), we get a palindrome (350121053).

Subtracting from 220110031 its reverse (130011022), we obtain a palindrome (90099009).

The spelling of 220110031 in words is "two hundred twenty million, one hundred ten thousand, thirty-one".