3421523 has 6 divisors (see below), whose sum is σ = 3980196. Its totient is φ = 2932692.

The previous prime is 3421513. The next prime is 3421531. The reversal of 3421523 is 3251243.

It is a happy number.

3421523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3421523 - 2¹⁰ = 3420499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3421495 and 3421504.

It is not an unprimeable number, because it can be changed into a prime (3421513) 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 5 ways as a sum of consecutive naturals, for example, 34865 + ... + 34962.

It is an arithmetic number, because the mean of its divisors is an integer number (663366).

Almost surely, 2^3421523 is an apocalyptic number.

3421523 is a deficient number, since it is larger than the sum of its proper divisors (558673).

3421523 is an equidigital number, since it uses as much as digits as its factorization.

3421523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69841 (or 69834 counting only the distinct ones).

The product of its digits is 720, while the sum is 20.

The square root of 3421523 is about 1849.7359270988. The cubic root of 3421523 is about 150.6860867450.

Adding to 3421523 its product of digits (720), we get a palindrome (3422243).

Adding to 3421523 its reverse (3251243), we get a palindrome (6672766).

The spelling of 3421523 in words is "three million, four hundred twenty-one thousand, five hundred twenty-three".