20243233 has 2 divisors, whose sum is σ = 20243234. Its totient is φ = 20243232.

The previous prime is 20243219. The next prime is 20243263. The reversal of 20243233 is 33234202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19298449 + 944784 = 4393^2 + 972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20243233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20243233.

It is not a weakly prime, because it can be changed into another prime (20243203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121616 + 10121617.

It is an arithmetic number, because the mean of its divisors is an integer number (10121617).

Almost surely, 2^20243233 is an apocalyptic number.

It is an amenable number.

20243233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20243233 is an equidigital number, since it uses as much as digits as its factorization.

20243233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 20243233 is about 4499.2480482854. The cubic root of 20243233 is about 272.5377239248.

Adding to 20243233 its reverse (33234202), we get a palindrome (53477435).

It can be divided in two parts, 20 and 243233, that added together give a triangular number (243253 = T₆₉₇).

The spelling of 20243233 in words is "twenty million, two hundred forty-three thousand, two hundred thirty-three".