3203981 has 4 divisors (see below), whose sum is σ = 3495264. Its totient is φ = 2912700.

The previous prime is 3203957. The next prime is 3203999. The reversal of 3203981 is 1893023.

3203981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1893023 = 11 ⋅172093.

It is a cyclic number.

It is not a de Polignac number, because 3203981 - 2⁶ = 3203917 is a prime.

It is a super-2 number, since 2×3203981² = 20530988496722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3203981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3203281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145625 + ... + 145646.

It is an arithmetic number, because the mean of its divisors is an integer number (873816).

Almost surely, 2^3203981 is an apocalyptic number.

It is an amenable number.

3203981 is a deficient number, since it is larger than the sum of its proper divisors (291283).

3203981 is a wasteful number, since it uses less digits than its factorization.

3203981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291282.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 3203981 is about 1789.9667594679. The cubic root of 3203981 is about 147.4223434945.

The spelling of 3203981 in words is "three million, two hundred three thousand, nine hundred eighty-one".