33331081 has 4 divisors (see below), whose sum is σ = 38092672. Its totient is φ = 28569492.

The previous prime is 33331069. The next prime is 33331087. The reversal of 33331081 is 18013333.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 33331081 - 2⁵ = 33331049 is a prime.

It is a super-2 number, since 2×33331081² = 2221921921257122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (33331087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2380785 + ... + 2380798.

It is an arithmetic number, because the mean of its divisors is an integer number (9523168).

Almost surely, 2^33331081 is an apocalyptic number.

It is an amenable number.

33331081 is a deficient number, since it is larger than the sum of its proper divisors (4761591).

33331081 is an equidigital number, since it uses as much as digits as its factorization.

33331081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4761590.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 33331081 is about 5773.3076308127. The cubic root of 33331081 is about 321.8225460255.

The spelling of 33331081 in words is "thirty-three million, three hundred thirty-one thousand, eighty-one".