20213133 has 8 divisors (see below), whose sum is σ = 27028608. Its totient is φ = 13436544.

The previous prime is 20213107. The next prime is 20213183. The reversal of 20213133 is 33131202.

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

It is not a de Polignac number, because 20213133 - 2¹⁶ = 20147597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213183) 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, 8485 + ... + 10602.

It is an arithmetic number, because the mean of its divisors is an integer number (3378576).

Almost surely, 2^20213133 is an apocalyptic number.

It is an amenable number.

20213133 is a deficient number, since it is larger than the sum of its proper divisors (6815475).

20213133 is a wasteful number, since it uses less digits than its factorization.

20213133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19443.

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

The square root of 20213133 is about 4495.9018005290. The cubic root of 20213133 is about 272.4025766261.

Adding to 20213133 its reverse (33131202), we get a palindrome (53344335).

The spelling of 20213133 in words is "twenty million, two hundred thirteen thousand, one hundred thirty-three".