220231333 has 6 divisors (see below), whose sum is σ = 256187526. Its totient is φ = 188769672.

The previous prime is 220231327. The next prime is 220231351. The reversal of 220231333 is 333132022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 220017889 + 213444 = 14833^2 + 462^2 .

It is not a de Polignac number, because 220231333 - 2¹³ = 220223141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220231333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220231313) 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 in 5 ways as a sum of consecutive naturals, for example, 2247210 + ... + 2247307.

It is an arithmetic number, because the mean of its divisors is an integer number (42697921).

Almost surely, 2^220231333 is an apocalyptic number.

It is an amenable number.

220231333 is a deficient number, since it is larger than the sum of its proper divisors (35956193).

220231333 is an equidigital number, since it uses as much as digits as its factorization.

220231333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494531 (or 4494524 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 220231333 is about 14840.1931591203. The cubic root of 220231333 is about 603.8925925191.

Adding to 220231333 its reverse (333132022), we get a palindrome (553363355).

The spelling of 220231333 in words is "two hundred twenty million, two hundred thirty-one thousand, three hundred thirty-three".