3981323 has 16 divisors (see below), whose sum is σ = 4423680. Its totient is φ = 3570336.

The previous prime is 3981301. The next prime is 3981331. The reversal of 3981323 is 3231893.

It is not a de Polignac number, because 3981323 - 2⁸ = 3981067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3981343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31286 + ... + 31412.

It is an arithmetic number, because the mean of its divisors is an integer number (276480).

Almost surely, 2^3981323 is an apocalyptic number.

3981323 is a deficient number, since it is larger than the sum of its proper divisors (442357).

3981323 is a wasteful number, since it uses less digits than its factorization.

3981323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226.

The product of its digits is 3888, while the sum is 29.

The square root of 3981323 is about 1995.3252867640. The cubic root of 3981323 is about 158.4926539136.

The spelling of 3981323 in words is "three million, nine hundred eighty-one thousand, three hundred twenty-three".