63111223 has 4 divisors (see below), whose sum is σ = 72127120. Its totient is φ = 54095328.

The previous prime is 63111203. The next prime is 63111247. The reversal of 63111223 is 32211136.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 63111223 - 2⁹ = 63110711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63111223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63111203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4507938 + ... + 4507951.

It is an arithmetic number, because the mean of its divisors is an integer number (18031780).

Almost surely, 2^63111223 is an apocalyptic number.

63111223 is a deficient number, since it is larger than the sum of its proper divisors (9015897).

63111223 is an equidigital number, since it uses as much as digits as its factorization.

63111223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9015896.

The product of its digits is 216, while the sum is 19.

The square root of 63111223 is about 7944.2572340024. The cubic root of 63111223 is about 398.1397432738.

Adding to 63111223 its reverse (32211136), we get a palindrome (95322359).

The spelling of 63111223 in words is "sixty-three million, one hundred eleven thousand, two hundred twenty-three".