233133220 has 24 divisors (see below), whose sum is σ = 498819384. Its totient is φ = 91493376.

The previous prime is 233133217. The next prime is 233133247. The reversal of 233133220 is 22331332.

It is a happy number.

233133220 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 53787556 + 179345664 = 7334^2 + 13392^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108909 + ... + 111028.

It is an arithmetic number, because the mean of its divisors is an integer number (20784141).

Almost surely, 2^233133220 is an apocalyptic number.

233133220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233133220 is an abundant number, since it is smaller than the sum of its proper divisors (265686164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

233133220 is a wasteful number, since it uses less digits than its factorization.

233133220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219999 (or 219997 counting only the distinct ones).

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

The square root of 233133220 is about 15268.7006650861. The cubic root of 233133220 is about 615.4622034945.

Adding to 233133220 its reverse (22331332), we get a palindrome (255464552).

The spelling of 233133220 in words is "two hundred thirty-three million, one hundred thirty-three thousand, two hundred twenty".