3301991 has 32 divisors (see below), whose sum is σ = 4523520. Its totient is φ = 2332800.

The previous prime is 3301981. The next prime is 3301999. The reversal of 3301991 is 1991033.

3301991 = T₁₅₃ + T₁₅₄ + ... + T₂₈₅.

3301991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3301991 - 2¹⁰ = 3300967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3301991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3301999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54101 + ... + 54161.

It is an arithmetic number, because the mean of its divisors is an integer number (141360).

Almost surely, 2^3301991 is an apocalyptic number.

3301991 is a deficient number, since it is larger than the sum of its proper divisors (1221529).

3301991 is a wasteful number, since it uses less digits than its factorization.

3301991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 3301991 is about 1817.1381345401. The cubic root of 3301991 is about 148.9104908097.

The spelling of 3301991 in words is "three million, three hundred one thousand, nine hundred ninety-one".