33231145 has 8 divisors (see below), whose sum is σ = 40037760. Its totient is φ = 26478000.

The previous prime is 33231139. The next prime is 33231169. The reversal of 33231145 is 54113233.

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

It is not a de Polignac number, because 33231145 - 2³ = 33231137 is a prime.

It is a super-2 number, since 2×33231145² = 2208617996022050, which contains 22 as substring.

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, 11985 + ... + 14494.

It is an arithmetic number, because the mean of its divisors is an integer number (5004720).

Almost surely, 2^33231145 is an apocalyptic number.

It is an amenable number.

33231145 is a deficient number, since it is larger than the sum of its proper divisors (6806615).

33231145 is a wasteful number, since it uses less digits than its factorization.

33231145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26735.

The product of its digits is 1080, while the sum is 22.

The square root of 33231145 is about 5764.6461296423. The cubic root of 33231145 is about 321.5005857221.

Adding to 33231145 its reverse (54113233), we get a palindrome (87344378).

The spelling of 33231145 in words is "thirty-three million, two hundred thirty-one thousand, one hundred forty-five".