20113233 has 8 divisors (see below), whose sum is σ = 30648768. Its totient is φ = 11493264.

The previous prime is 20113231. The next prime is 20113253. The reversal of 20113233 is 33231102.

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

It is not a de Polignac number, because 20113233 - 2¹ = 20113231 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20113231) 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 7 ways as a sum of consecutive naturals, for example, 478866 + ... + 478907.

It is an arithmetic number, because the mean of its divisors is an integer number (3831096).

Almost surely, 2^20113233 is an apocalyptic number.

It is an amenable number.

20113233 is a deficient number, since it is larger than the sum of its proper divisors (10535535).

20113233 is an equidigital number, since it uses as much as digits as its factorization.

20113233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957783.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 20113233 is about 4484.7779209232. Note that the first 3 decimals coincide. The cubic root of 20113233 is about 271.9530673421.

Adding to 20113233 its reverse (33231102), we get a palindrome (53344335).

The spelling of 20113233 in words is "twenty million, one hundred thirteen thousand, two hundred thirty-three".