321121433 has 4 divisors (see below), whose sum is σ = 322523940. Its totient is φ = 319718928.

The previous prime is 321121417. The next prime is 321121441. The reversal of 321121433 is 334121123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 132526144 + 188595289 = 11512^2 + 13733^2 .

It is a cyclic number.

It is not a de Polignac number, because 321121433 - 2⁴ = 321121417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321121403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700910 + ... + 701367.

It is an arithmetic number, because the mean of its divisors is an integer number (80630985).

Almost surely, 2^321121433 is an apocalyptic number.

It is an amenable number.

321121433 is a deficient number, since it is larger than the sum of its proper divisors (1402507).

321121433 is a wasteful number, since it uses less digits than its factorization.

321121433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402506.

The product of its digits is 432, while the sum is 20.

The square root of 321121433 is about 17919.8614112945. The cubic root of 321121433 is about 684.7884568862.

Adding to 321121433 its reverse (334121123), we get a palindrome (655242556).

The spelling of 321121433 in words is "three hundred twenty-one million, one hundred twenty-one thousand, four hundred thirty-three".