3287381 has 4 divisors (see below), whose sum is σ = 3327072. Its totient is φ = 3247692.

The previous prime is 3287359. The next prime is 3287429. The reversal of 3287381 is 1837823.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1837823 = 13 ⋅141371.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3287381 is a prime.

It is a super-2 number, since 2×3287381² = 21613747678322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3287311) 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, 19721 + ... + 19886.

It is an arithmetic number, because the mean of its divisors is an integer number (831768).

Almost surely, 2^3287381 is an apocalyptic number.

It is an amenable number.

3287381 is a deficient number, since it is larger than the sum of its proper divisors (39691).

3287381 is an equidigital number, since it uses as much as digits as its factorization.

3287381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39690.

The product of its digits is 8064, while the sum is 32.

The square root of 3287381 is about 1813.1136202676. The cubic root of 3287381 is about 148.6905428170.

The spelling of 3287381 in words is "three million, two hundred eighty-seven thousand, three hundred eighty-one".