33136881 has 4 divisors (see below), whose sum is σ = 44182512. Its totient is φ = 22091252.

The previous prime is 33136877. The next prime is 33136889. The reversal of 33136881 is 18863133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33136881 - 2² = 33136877 is a prime.

It is a super-2 number, since 2×33136881² = 2196105764816322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33136889) 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, 5522811 + ... + 5522816.

It is an arithmetic number, because the mean of its divisors is an integer number (11045628).

Almost surely, 2^33136881 is an apocalyptic number.

It is an amenable number.

33136881 is a deficient number, since it is larger than the sum of its proper divisors (11045631).

33136881 is a wasteful number, since it uses less digits than its factorization.

33136881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11045630.

The product of its digits is 10368, while the sum is 33.

The square root of 33136881 is about 5756.4642793993. The cubic root of 33136881 is about 321.1963065899.

The spelling of 33136881 in words is "thirty-three million, one hundred thirty-six thousand, eight hundred eighty-one".