3278381 has 2 divisors, whose sum is σ = 3278382. Its totient is φ = 3278380.

The previous prime is 3278371. The next prime is 3278389. The reversal of 3278381 is 1838723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1755625 + 1522756 = 1325^2 + 1234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3278381 is a prime.

It is a super-2 number, since 2×3278381² = 21495563962322, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3278389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1639190 + 1639191.

It is an arithmetic number, because the mean of its divisors is an integer number (1639191).

Almost surely, 2^3278381 is an apocalyptic number.

It is an amenable number.

3278381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3278381 is an equidigital number, since it uses as much as digits as its factorization.

3278381 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3278381 is about 1810.6300008561. The cubic root of 3278381 is about 148.5547266992.

The spelling of 3278381 in words is "three million, two hundred seventy-eight thousand, three hundred eighty-one".