33161113 has 4 divisors (see below), whose sum is σ = 33233508. Its totient is φ = 33088720.

The previous prime is 33161111. The next prime is 33161143. The reversal of 33161113 is 31116133.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3697929 + 29463184 = 1923^2 + 5428^2 .

It is a cyclic number.

It is not a de Polignac number, because 33161113 - 2¹ = 33161111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33161111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35506 + ... + 36427.

It is an arithmetic number, because the mean of its divisors is an integer number (8308377).

Almost surely, 2^33161113 is an apocalyptic number.

It is an amenable number.

33161113 is a deficient number, since it is larger than the sum of its proper divisors (72395).

33161113 is an equidigital number, since it uses as much as digits as its factorization.

33161113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72394.

The product of its digits is 162, while the sum is 19.

The square root of 33161113 is about 5758.5686589638. The cubic root of 33161113 is about 321.2745812316.

Adding to 33161113 its reverse (31116133), we get a palindrome (64277246).

The spelling of 33161113 in words is "thirty-three million, one hundred sixty-one thousand, one hundred thirteen".