3240403 has 4 divisors (see below), whose sum is σ = 3279528. Its totient is φ = 3201280.

The previous prime is 3240389. The next prime is 3240407. The reversal of 3240403 is 3040423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3040423 = 61 ⋅49843.

It is a cyclic number.

It is not a de Polignac number, because 3240403 - 2⁵ = 3240371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3240407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19438 + ... + 19603.

It is an arithmetic number, because the mean of its divisors is an integer number (819882).

Almost surely, 2^3240403 is an apocalyptic number.

3240403 is a deficient number, since it is larger than the sum of its proper divisors (39125).

3240403 is an equidigital number, since it uses as much as digits as its factorization.

3240403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39124.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 3240403 is about 1800.1119409637. Note that the first 3 decimals coincide. The cubic root of 3240403 is about 147.9788592886.

Adding to 3240403 its reverse (3040423), we get a palindrome (6280826).

The spelling of 3240403 in words is "three million, two hundred forty thousand, four hundred three".