220005031 has 2 divisors, whose sum is σ = 220005032. Its totient is φ = 220005030.

The previous prime is 220005017. The next prime is 220005043. The reversal of 220005031 is 130500022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220005031 - 2¹⁷ = 219873959 is a prime.

It is a super-2 number, since 2×220005031² = 96804427330621922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220005001) 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, 110002515 + 110002516.

It is an arithmetic number, because the mean of its divisors is an integer number (110002516).

Almost surely, 2^220005031 is an apocalyptic number.

220005031 is a deficient number, since it is larger than the sum of its proper divisors (1).

220005031 is an equidigital number, since it uses as much as digits as its factorization.

220005031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 220005031 is about 14832.5665681972. The cubic root of 220005031 is about 603.6856753409.

Adding to 220005031 its reverse (130500022), we get a palindrome (350505053).

The spelling of 220005031 in words is "two hundred twenty million, five thousand, thirty-one".