220223131 has 2 divisors, whose sum is σ = 220223132. Its totient is φ = 220223130.

The previous prime is 220223119. The next prime is 220223141. The reversal of 220223131 is 131322022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220223131 is a prime.

It is a super-2 number, since 2×220223131² = 96996454854886322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220223111) 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, 110111565 + 110111566.

It is an arithmetic number, because the mean of its divisors is an integer number (110111566).

Almost surely, 2^220223131 is an apocalyptic number.

220223131 is a deficient number, since it is larger than the sum of its proper divisors (1).

220223131 is an equidigital number, since it uses as much as digits as its factorization.

220223131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 220223131 is about 14839.9168124353. The cubic root of 220223131 is about 603.8850955711.

Adding to 220223131 its reverse (131322022), we get a palindrome (351545153).

The spelling of 220223131 in words is "two hundred twenty million, two hundred twenty-three thousand, one hundred thirty-one".