40321233 has 12 divisors (see below), whose sum is σ = 60399248. Its totient is φ = 26880660.

The previous prime is 40321219. The next prime is 40321241. The reversal of 40321233 is 33212304.

It is not a de Polignac number, because 40321233 - 2⁵ = 40321201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40321213) 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 in 11 ways as a sum of consecutive naturals, for example, 82723 + ... + 83208.

Almost surely, 2^40321233 is an apocalyptic number.

It is an amenable number.

40321233 is a deficient number, since it is larger than the sum of its proper divisors (20078015).

40321233 is an equidigital number, since it uses as much as digits as its factorization.

40321233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165946 (or 165934 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 40321233 is about 6349.9002354368. The cubic root of 40321233 is about 342.9082506402.

Adding to 40321233 its reverse (33212304), we get a palindrome (73533537).

The spelling of 40321233 in words is "forty million, three hundred twenty-one thousand, two hundred thirty-three".