33136213 has 24 divisors (see below), whose sum is σ = 39213720. Its totient is φ = 27878400.

The previous prime is 33136193. The next prime is 33136217. The reversal of 33136213 is 31263133.

It can be written as a sum of positive squares in 4 ways, for example, as 39204 + 33097009 = 198^2 + 5753^2 .

It is not a de Polignac number, because 33136213 - 2²¹ = 31039061 is a prime.

It is a super-2 number, since 2×33136213² = 2196017223962738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33136217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182983 + ... + 183163.

It is an arithmetic number, because the mean of its divisors is an integer number (1633905).

Almost surely, 2^33136213 is an apocalyptic number.

It is an amenable number.

33136213 is a deficient number, since it is larger than the sum of its proper divisors (6077507).

33136213 is a wasteful number, since it uses less digits than its factorization.

33136213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 298 counting only the distinct ones).

The product of its digits is 972, while the sum is 22.

The square root of 33136213 is about 5756.4062573797. The cubic root of 33136213 is about 321.1941482639.

Adding to 33136213 its reverse (31263133), we get a palindrome (64399346).

Subtracting from 33136213 its reverse (31263133), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 33136213 in words is "thirty-three million, one hundred thirty-six thousand, two hundred thirteen".