20213183 has 2 divisors, whose sum is σ = 20213184. Its totient is φ = 20213182.

The previous prime is 20213107. The next prime is 20213197. The reversal of 20213183 is 38131202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20213183 - 2¹² = 20209087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20213983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106591 + 10106592.

It is an arithmetic number, because the mean of its divisors is an integer number (10106592).

Almost surely, 2^20213183 is an apocalyptic number.

20213183 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213183 is an equidigital number, since it uses as much as digits as its factorization.

20213183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20213183 is about 4495.9073611452. The cubic root of 20213183 is about 272.4028012345.

Adding to 20213183 its reverse (38131202), we get a palindrome (58344385).

The spelling of 20213183 in words is "twenty million, two hundred thirteen thousand, one hundred eighty-three".