33401321 has 4 divisors (see below), whose sum is σ = 33424512. Its totient is φ = 33378132.

The previous prime is 33401317. The next prime is 33401327. The reversal of 33401321 is 12310433.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12310433 = 1409 ⋅8737.

It is a cyclic number.

It is not a de Polignac number, because 33401321 - 2² = 33401317 is a prime.

It is a super-2 number, since 2×33401321² = 2231296489090082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33401321.

It is not an unprimeable number, because it can be changed into a prime (33401327) 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, 9281 + ... + 12366.

It is an arithmetic number, because the mean of its divisors is an integer number (8356128).

Almost surely, 2^33401321 is an apocalyptic number.

It is an amenable number.

33401321 is a deficient number, since it is larger than the sum of its proper divisors (23191).

33401321 is a wasteful number, since it uses less digits than its factorization.

33401321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23190.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 33401321 is about 5779.3875973151. The cubic root of 33401321 is about 322.0484508449.

Adding to 33401321 its reverse (12310433), we get a palindrome (45711754).

The spelling of 33401321 in words is "thirty-three million, four hundred one thousand, three hundred twenty-one".