33040231 has 16 divisors (see below), whose sum is σ = 40392000. Its totient is φ = 26380800.

The previous prime is 33040229. The next prime is 33040243. The reversal of 33040231 is 13204033.

It is a cyclic number.

It is not a de Polignac number, because 33040231 - 2¹ = 33040229 is a prime.

It is a super-2 number, since 2×33040231² = 2183313729066722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33040291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10645 + ... + 13393.

It is an arithmetic number, because the mean of its divisors is an integer number (2524500).

Almost surely, 2^33040231 is an apocalyptic number.

33040231 is a deficient number, since it is larger than the sum of its proper divisors (7351769).

33040231 is a wasteful number, since it uses less digits than its factorization.

33040231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 33040231 is about 5748.0632390397. The cubic root of 33040231 is about 320.8837258377.

Adding to 33040231 its reverse (13204033), we get a palindrome (46244264).

The spelling of 33040231 in words is "thirty-three million, forty thousand, two hundred thirty-one".