33381423 has 16 divisors (see below), whose sum is σ = 52057600. Its totient is φ = 21082680.

The previous prime is 33381401. The next prime is 33381427. The reversal of 33381423 is 32418333.

It is not a de Polignac number, because 33381423 - 2⁵ = 33381391 is a prime.

It is a super-2 number, since 2×33381423² = 2228638803009858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33381427) 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 15 ways as a sum of consecutive naturals, for example, 32023 + ... + 33048.

It is an arithmetic number, because the mean of its divisors is an integer number (3253600).

Almost surely, 2^33381423 is an apocalyptic number.

33381423 is a deficient number, since it is larger than the sum of its proper divisors (18676177).

33381423 is a wasteful number, since it uses less digits than its factorization.

33381423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65099 (or 65093 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 33381423 is about 5777.6658781899. The cubic root of 33381423 is about 321.9844873769.

Adding to 33381423 its reverse (32418333), we get a palindrome (65799756).

It can be divided in two parts, 3338 and 1423, that added together give a square (4761 = 69²).

The spelling of 33381423 in words is "thirty-three million, three hundred eighty-one thousand, four hundred twenty-three".