3381185281 has 2 divisors, whose sum is σ = 3381185282. Its totient is φ = 3381185280.

The previous prime is 3381185257. The next prime is 3381185293. The reversal of 3381185281 is 1825811833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3216704656 + 164480625 = 56716^2 + 12825^2 .

It is a cyclic number.

It is not a de Polignac number, because 3381185281 - 2⁷ = 3381185153 is a prime.

It is a super-2 number, since 2×3381185281² = 22864827808902097922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3381185231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1690592640 + 1690592641.

It is an arithmetic number, because the mean of its divisors is an integer number (1690592641).

Almost surely, 2^3381185281 is an apocalyptic number.

It is an amenable number.

3381185281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3381185281 is an equidigital number, since it uses as much as digits as its factorization.

3381185281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 40.

The square root of 3381185281 is about 58147.9602479743. The cubic root of 3381185281 is about 1500.9157787117.

The spelling of 3381185281 in words is "three billion, three hundred eighty-one million, one hundred eighty-five thousand, two hundred eighty-one".