33131242 has 16 divisors (see below), whose sum is σ = 51144192. Its totient is φ = 16087680.

The previous prime is 33131237. The next prime is 33131251. The reversal of 33131242 is 24213133.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15418 + ... + 17434.

It is an arithmetic number, because the mean of its divisors is an integer number (3196512).

Almost surely, 2^33131242 is an apocalyptic number.

33131242 is a deficient number, since it is larger than the sum of its proper divisors (18012950).

33131242 is a wasteful number, since it uses less digits than its factorization.

33131242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253.

The product of its digits is 432, while the sum is 19.

The square root of 33131242 is about 5755.9744613749. The cubic root of 33131242 is about 321.1780859179.

Adding to 33131242 its reverse (24213133), we get a palindrome (57344375).

The spelling of 33131242 in words is "thirty-three million, one hundred thirty-one thousand, two hundred forty-two".