220431056 has 20 divisors (see below), whose sum is σ = 428326752. Its totient is φ = 109895136.

The previous prime is 220431053. The next prime is 220431109. The reversal of 220431056 is 650134022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220431053) 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, 14300 + ... + 25403.

Almost surely, 2^220431056 is an apocalyptic number.

It is an amenable number.

220431056 is a deficient number, since it is larger than the sum of its proper divisors (207895696).

220431056 is a wasteful number, since it uses less digits than its factorization.

220431056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40058 (or 40052 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 220431056 is about 14846.9207581909. The cubic root of 220431056 is about 604.0750897098.

Adding to 220431056 its reverse (650134022), we get a palindrome (870565078).

The spelling of 220431056 in words is "two hundred twenty million, four hundred thirty-one thousand, fifty-six".