33131330 has 16 divisors (see below), whose sum is σ = 59780160. Its totient is φ = 13220592.

The previous prime is 33131323. The next prime is 33131387. The reversal of 33131330 is 3313133.

It is a super-3 number, since 3×33131330³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33131299 and 33131308.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 617 + ... + 8163.

It is an arithmetic number, because the mean of its divisors is an integer number (3736260).

Almost surely, 2^33131330 is an apocalyptic number.

33131330 is a deficient number, since it is larger than the sum of its proper divisors (26648830).

33131330 is a wasteful number, since it uses less digits than its factorization.

33131330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7993.

The product of its (nonzero) digits is 243, while the sum is 17.

The square root of 33131330 is about 5755.9821056011. The cubic root of 33131330 is about 321.1783702784.

Adding to 33131330 its reverse (3313133), we get a palindrome (36444463).

The spelling of 33131330 in words is "thirty-three million, one hundred thirty-one thousand, three hundred thirty".