3212381 has 2 divisors, whose sum is σ = 3212382. Its totient is φ = 3212380.

The previous prime is 3212353. The next prime is 3212389. The reversal of 3212381 is 1832123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3204100 + 8281 = 1790^2 + 91^2 .

It is an emirp because it is prime and its reverse (1832123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3212381 - 2⁶ = 3212317 is a prime.

It is a super-2 number, since 2×3212381² = 20638783378322, 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 (3212389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606190 + 1606191.

It is an arithmetic number, because the mean of its divisors is an integer number (1606191).

Almost surely, 2^3212381 is an apocalyptic number.

It is an amenable number.

3212381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3212381 is an equidigital number, since it uses as much as digits as its factorization.

3212381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 20.

The square root of 3212381 is about 1792.3116358491. The cubic root of 3212381 is about 147.5510653410.

The spelling of 3212381 in words is "three million, two hundred twelve thousand, three hundred eighty-one".