3291121 has 4 divisors (see below), whose sum is σ = 3308544. Its totient is φ = 3273700.

The previous prime is 3291109. The next prime is 3291137. The reversal of 3291121 is 1211923.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3291121 is a prime.

It is a Duffinian number.

3291121 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3291221) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8425 + ... + 8806.

It is an arithmetic number, because the mean of its divisors is an integer number (827136).

Almost surely, 2^3291121 is an apocalyptic number.

It is an amenable number.

3291121 is a deficient number, since it is larger than the sum of its proper divisors (17423).

3291121 is a wasteful number, since it uses less digits than its factorization.

3291121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17422.

The product of its digits is 108, while the sum is 19.

The square root of 3291121 is about 1814.1447020566. The cubic root of 3291121 is about 148.7469090524.

The spelling of 3291121 in words is "three million, two hundred ninety-one thousand, one hundred twenty-one".