213573233 has 4 divisors (see below), whose sum is σ = 215255040. Its totient is φ = 211891428.

The previous prime is 213573181. The next prime is 213573247. The reversal of 213573233 is 332375312.

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 213573233 - 2⁶ = 213573169 is a prime.

It is a super-2 number, since 2×213573233² = 91227051708144578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213573196 and 213573205.

It is not an unprimeable number, because it can be changed into a prime (213573133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840713 + ... + 840966.

It is an arithmetic number, because the mean of its divisors is an integer number (53813760).

Almost surely, 2^213573233 is an apocalyptic number.

It is an amenable number.

213573233 is a deficient number, since it is larger than the sum of its proper divisors (1681807).

213573233 is a wasteful number, since it uses less digits than its factorization.

213573233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681806.

The product of its digits is 11340, while the sum is 29.

The square root of 213573233 is about 14614.1449630144. The cubic root of 213573233 is about 597.7445255341.

The spelling of 213573233 in words is "two hundred thirteen million, five hundred seventy-three thousand, two hundred thirty-three".