3281381 has 8 divisors (see below), whose sum is σ = 3414528. Its totient is φ = 3150000.

The previous prime is 3281363. The next prime is 3281393. The reversal of 3281381 is 1831823.

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 3281381 - 2¹⁰ = 3280357 is a prime.

It is a super-2 number, since 2×3281381² = 21534922534322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3281381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3281351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4331 + ... + 5031.

It is an arithmetic number, because the mean of its divisors is an integer number (426816).

Almost surely, 2^3281381 is an apocalyptic number.

3281381 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3281381 is a deficient number, since it is larger than the sum of its proper divisors (133147).

3281381 is a wasteful number, since it uses less digits than its factorization.

3281381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883.

The product of its digits is 1152, while the sum is 26.

The square root of 3281381 is about 1811.4582523481. The cubic root of 3281381 is about 148.6000263262.

The spelling of 3281381 in words is "three million, two hundred eighty-one thousand, three hundred eighty-one".