33231442 has 8 divisors (see below), whose sum is σ = 51455232. Its totient is φ = 16079700.

The previous prime is 33231433. The next prime is 33231449. The reversal of 33231442 is 24413233.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×33231442² = 2208657474798728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33231449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267934 + ... + 268057.

It is an arithmetic number, because the mean of its divisors is an integer number (6431904).

Almost surely, 2^33231442 is an apocalyptic number.

33231442 is a deficient number, since it is larger than the sum of its proper divisors (18223790).

33231442 is a wasteful number, since it uses less digits than its factorization.

33231442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536024.

The product of its digits is 1728, while the sum is 22.

The square root of 33231442 is about 5764.6718900558. The cubic root of 33231442 is about 321.5015435123.

Adding to 33231442 its reverse (24413233), we get a palindrome (57644675).

The spelling of 33231442 in words is "thirty-three million, two hundred thirty-one thousand, four hundred forty-two".