213224433 has 8 divisors (see below), whose sum is σ = 287114496. Its totient is φ = 140742000.

The previous prime is 213224423. The next prime is 213224437. The reversal of 213224433 is 334422312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213224433 - 2⁸ = 213224177 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (213224437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351553 + ... + 352158.

It is an arithmetic number, because the mean of its divisors is an integer number (35889312).

Almost surely, 2^213224433 is an apocalyptic number.

It is an amenable number.

213224433 is a deficient number, since it is larger than the sum of its proper divisors (73890063).

213224433 is a wasteful number, since it uses less digits than its factorization.

213224433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703815.

The product of its digits is 3456, while the sum is 24.

The square root of 213224433 is about 14602.2064428634. The cubic root of 213224433 is about 597.4189433878.

Adding to 213224433 its reverse (334422312), we get a palindrome (547646745).

It can be divided in two parts, 2132 and 24433, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 213224433 in words is "two hundred thirteen million, two hundred twenty-four thousand, four hundred thirty-three".