3531321 has 24 divisors (see below), whose sum is σ = 5447520. Its totient is φ = 2198016.

The previous prime is 3531313. The next prime is 3531323. The reversal of 3531321 is 1231353.

It is not a de Polignac number, because 3531321 - 2³ = 3531313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3531294 and 3531303.

It is not an unprimeable number, because it can be changed into a prime (3531323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18201 + ... + 18393.

It is an arithmetic number, because the mean of its divisors is an integer number (226980).

Almost surely, 2^3531321 is an apocalyptic number.

It is an amenable number.

3531321 is a deficient number, since it is larger than the sum of its proper divisors (1916199).

3531321 is a wasteful number, since it uses less digits than its factorization.

3531321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 322 counting only the distinct ones).

The product of its digits is 270, while the sum is 18.

The square root of 3531321 is about 1879.1809386006. The cubic root of 3531321 is about 152.2810043065.

Adding to 3531321 its reverse (1231353), we get a palindrome (4762674).

Subtracting from 3531321 its reverse (1231353), we obtain a cube (2299968 = 132³).

The spelling of 3531321 in words is "three million, five hundred thirty-one thousand, three hundred twenty-one".