433221013 has 8 divisors (see below), whose sum is σ = 459211032. Its totient is φ = 407287296.

The previous prime is 433221007. The next prime is 433221037. The reversal of 433221013 is 310122334.

It can be written as a sum of positive squares in 4 ways, for example, as 35497764 + 397723249 = 5958^2 + 19943^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-433221013 is a prime.

It is a super-2 number, since 2×433221013² = 375360892209492338, 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 (433221713) 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, 2331 + ... + 29527.

It is an arithmetic number, because the mean of its divisors is an integer number (57401379).

Almost surely, 2^433221013 is an apocalyptic number.

It is an amenable number.

433221013 is a deficient number, since it is larger than the sum of its proper divisors (25990019).

433221013 is a wasteful number, since it uses less digits than its factorization.

433221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28151.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 433221013 is about 20813.9619726759. The cubic root of 433221013 is about 756.6641729386.

Adding to 433221013 its reverse (310122334), we get a palindrome (743343347).

The spelling of 433221013 in words is "four hundred thirty-three million, two hundred twenty-one thousand, thirteen".