33423013 has 4 divisors (see below), whose sum is σ = 35994028. Its totient is φ = 30852000.

The previous prime is 33423011. The next prime is 33423023. The reversal of 33423013 is 31032433.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31032433 = 2441 ⋅12713.

It can be written as a sum of positive squares in 2 ways, for example, as 4068289 + 29354724 = 2017^2 + 5418^2 .

It is a cyclic number.

It is not a de Polignac number, because 33423013 - 2¹ = 33423011 is a prime.

It is a super-2 number, since 2×33423013² = 2234195595996338, 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 (33423011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1285488 + ... + 1285513.

It is an arithmetic number, because the mean of its divisors is an integer number (8998507).

Almost surely, 2^33423013 is an apocalyptic number.

It is an amenable number.

33423013 is a deficient number, since it is larger than the sum of its proper divisors (2571015).

33423013 is a wasteful number, since it uses less digits than its factorization.

33423013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571014.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 33423013 is about 5781.2639621453. The cubic root of 33423013 is about 322.1181523122.

Adding to 33423013 its reverse (31032433), we get a palindrome (64455446).

The spelling of 33423013 in words is "thirty-three million, four hundred twenty-three thousand, thirteen".