213233433 has 16 divisors (see below), whose sum is σ = 336132480. Its totient is φ = 117645696.

The previous prime is 213233429. The next prime is 213233443. The reversal of 213233433 is 334332312.

It is a happy number.

It is not a de Polignac number, because 213233433 - 2² = 213233429 is a prime.

It is a super-3 number, since 3×213233433³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (213233443) 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, 174460 + ... + 175677.

It is an arithmetic number, because the mean of its divisors is an integer number (21008280).

Almost surely, 2^213233433 is an apocalyptic number.

It is an amenable number.

213233433 is a deficient number, since it is larger than the sum of its proper divisors (122899047).

213233433 is a wasteful number, since it uses less digits than its factorization.

213233433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350176.

The product of its digits is 3888, while the sum is 24.

The square root of 213233433 is about 14602.5146122166. The cubic root of 213233433 is about 597.4273487642.

Adding to 213233433 its reverse (334332312), we get a palindrome (547565745).

The spelling of 213233433 in words is "two hundred thirteen million, two hundred thirty-three thousand, four hundred thirty-three".