33131213233 has 16 divisors (see below), whose sum is σ = 34528032000. Its totient is φ = 31764514320.

The previous prime is 33131213231. The next prime is 33131213261. The reversal of 33131213233 is 33231213133.

It is a cyclic number.

It is not a de Polignac number, because 33131213233 - 2¹ = 33131213231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33131213198 and 33131213207.

It is not an unprimeable number, because it can be changed into a prime (33131213231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1743618 + ... + 1762516.

It is an arithmetic number, because the mean of its divisors is an integer number (2158002000).

Almost surely, 2^33131213233 is an apocalyptic number.

It is an amenable number.

33131213233 is a deficient number, since it is larger than the sum of its proper divisors (1396818767).

33131213233 is a wasteful number, since it uses less digits than its factorization.

33131213233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19692.

The product of its digits is 2916, while the sum is 25.

Adding to 33131213233 its reverse (33231213133), we get a palindrome (66362426366).

The spelling of 33131213233 in words is "thirty-three billion, one hundred thirty-one million, two hundred thirteen thousand, two hundred thirty-three".