33381223 has 2 divisors, whose sum is σ = 33381224. Its totient is φ = 33381222.

The previous prime is 33381193. The next prime is 33381241. The reversal of 33381223 is 32218333.

It is a happy number.

It is a strong prime.

33381223 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 33381223 - 2⁵ = 33381191 is a prime.

It is a super-3 number, since 3×33381223³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33381263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16690611 + 16690612.

It is an arithmetic number, because the mean of its divisors is an integer number (16690612).

Almost surely, 2^33381223 is an apocalyptic number.

33381223 is a deficient number, since it is larger than the sum of its proper divisors (1).

33381223 is an equidigital number, since it uses as much as digits as its factorization.

33381223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 25.

The square root of 33381223 is about 5777.6485701365. The cubic root of 33381223 is about 321.9838443343.

Adding to 33381223 its reverse (32218333), we get a palindrome (65599556).

The spelling of 33381223 in words is "thirty-three million, three hundred eighty-one thousand, two hundred twenty-three".