33142331 has 8 divisors (see below), whose sum is σ = 34933680. Its totient is φ = 31394272.

The previous prime is 33142297. The next prime is 33142349. The reversal of 33142331 is 13324133.

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

It is a cyclic number.

It is not a de Polignac number, because 33142331 - 2⁶ = 33142267 is a prime.

It is a super-2 number, since 2×33142331² = 2196828208227122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33142831) 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 7 ways as a sum of consecutive naturals, for example, 9245 + ... + 12318.

It is an arithmetic number, because the mean of its divisors is an integer number (4366710).

Almost surely, 2^33142331 is an apocalyptic number.

33142331 is a deficient number, since it is larger than the sum of its proper divisors (1791349).

33142331 is a wasteful number, since it uses less digits than its factorization.

33142331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21645.

The product of its digits is 648, while the sum is 20.

The square root of 33142331 is about 5756.9376407948. The cubic root of 33142331 is about 321.2139146031.

Adding to 33142331 its reverse (13324133), we get a palindrome (46466464).

The spelling of 33142331 in words is "thirty-three million, one hundred forty-two thousand, three hundred thirty-one".