33021423 has 6 divisors (see below), whose sum is σ = 47697624. Its totient is φ = 22014276.

The previous prime is 33021421. The next prime is 33021431. The reversal of 33021423 is 32412033.

It is not a de Polignac number, because 33021423 - 2¹ = 33021421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33021396 and 33021405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33021421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1834515 + ... + 1834532.

It is an arithmetic number, because the mean of its divisors is an integer number (7949604).

Almost surely, 2^33021423 is an apocalyptic number.

33021423 is a deficient number, since it is larger than the sum of its proper divisors (14676201).

33021423 is a wasteful number, since it uses less digits than its factorization.

33021423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3669053 (or 3669050 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 33021423 is about 5746.4269768266. The cubic root of 33021423 is about 320.8228270842.

Adding to 33021423 its reverse (32412033), we get a palindrome (65433456).

The spelling of 33021423 in words is "thirty-three million, twenty-one thousand, four hundred twenty-three".