3491281 has 8 divisors (see below), whose sum is σ = 3643200. Its totient is φ = 3341520.

The previous prime is 3491261. The next prime is 3491287. The reversal of 3491281 is 1821943.

It is a happy number.

3491281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3491281 - 2⁵ = 3491249 is a prime.

It is a super-2 number, since 2×3491281² = 24378086041922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3491287) 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 7 ways as a sum of consecutive naturals, for example, 3340 + ... + 4258.

It is an arithmetic number, because the mean of its divisors is an integer number (455400).

Almost surely, 2^3491281 is an apocalyptic number.

It is an amenable number.

3491281 is a deficient number, since it is larger than the sum of its proper divisors (151919).

3491281 is a wasteful number, since it uses less digits than its factorization.

3491281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079.

The product of its digits is 1728, while the sum is 28.

The square root of 3491281 is about 1868.4969895614. The cubic root of 3491281 is about 151.7032674752.

The spelling of 3491281 in words is "three million, four hundred ninety-one thousand, two hundred eighty-one".