33442131 has 4 divisors (see below), whose sum is σ = 44589512. Its totient is φ = 22294752.

The previous prime is 33442127. The next prime is 33442153. The reversal of 33442131 is 13124433.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 33442131 - 2² = 33442127 is a prime.

It is a super-2 number, since 2×33442131² = 2236752251642322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33442098 and 33442107.

It is not an unprimeable number, because it can be changed into a prime (33442231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5573686 + ... + 5573691.

It is an arithmetic number, because the mean of its divisors is an integer number (11147378).

Almost surely, 2^33442131 is an apocalyptic number.

33442131 is a deficient number, since it is larger than the sum of its proper divisors (11147381).

33442131 is a wasteful number, since it uses less digits than its factorization.

33442131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11147380.

The product of its digits is 864, while the sum is 21.

The square root of 33442131 is about 5782.9171704253. The cubic root of 33442131 is about 322.1795579175.

Adding to 33442131 its reverse (13124433), we get a palindrome (46566564).

The spelling of 33442131 in words is "thirty-three million, four hundred forty-two thousand, one hundred thirty-one".