3331581 has 8 divisors (see below), whose sum is σ = 4845984. Its totient is φ = 2019120.

The previous prime is 3331577. The next prime is 3331621. The reversal of 3331581 is 1851333.

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

It is not a de Polignac number, because 3331581 - 2² = 3331577 is a prime.

It is a super-2 number, since 2×3331581² = 22198863919122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3331561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50446 + ... + 50511.

It is an arithmetic number, because the mean of its divisors is an integer number (605748).

Almost surely, 2^3331581 is an apocalyptic number.

It is an amenable number.

3331581 is a deficient number, since it is larger than the sum of its proper divisors (1514403).

3331581 is a wasteful number, since it uses less digits than its factorization.

3331581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100971.

The product of its digits is 1080, while the sum is 24.

The square root of 3331581 is about 1825.2618990161. The cubic root of 3331581 is about 149.3539772472.

The spelling of 3331581 in words is "three million, three hundred thirty-one thousand, five hundred eighty-one".