33040431213133 has 4 divisors (see below), whose sum is σ = 33231416364828. Its totient is φ = 32849446061440.

The previous prime is 33040431213071. The next prime is 33040431213193. The reversal of 33040431213133 is 33131213404033.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27582474617604 + 5457956595529 = 5251902^2 + 2336227^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33040431213133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33040431213095 and 33040431213104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33040431213193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95492575588 + ... + 95492575933.

It is an arithmetic number, because the mean of its divisors is an integer number (8307854091207).

Almost surely, 2^{33040431213133} is an apocalyptic number.

It is an amenable number.

33040431213133 is a deficient number, since it is larger than the sum of its proper divisors (190985151695).

33040431213133 is a wasteful number, since it uses less digits than its factorization.

33040431213133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190985151694.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 33040431213133 its reverse (33131213404033), we get a palindrome (66171644617166).

The spelling of 33040431213133 in words is "thirty-three trillion, forty billion, four hundred thirty-one million, two hundred thirteen thousand, one hundred thirty-three".