220013231 has 8 divisors (see below), whose sum is σ = 228748800. Its totient is φ = 211380120.

The previous prime is 220013221. The next prime is 220013243. The reversal of 220013231 is 132310022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220013231 - 2¹⁰ = 220012207 is a prime.

It is a super-2 number, since 2×220013231² = 96811643630118722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220013221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21221 + ... + 29838.

It is an arithmetic number, because the mean of its divisors is an integer number (28593600).

Almost surely, 2^220013231 is an apocalyptic number.

220013231 is a deficient number, since it is larger than the sum of its proper divisors (8735569).

220013231 is a wasteful number, since it uses less digits than its factorization.

220013231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51229.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 220013231 is about 14832.8429844046. The cubic root of 220013231 is about 603.6931754134.

Adding to 220013231 its reverse (132310022), we get a palindrome (352323253).

The spelling of 220013231 in words is "two hundred twenty million, thirteen thousand, two hundred thirty-one".