3243121 has 4 divisors (see below), whose sum is σ = 3706432. Its totient is φ = 2779812.

The previous prime is 3243113. The next prime is 3243131. The reversal of 3243121 is 1213423.

It is a happy number.

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: 1213423 = 191 ⋅6353.

It is not a de Polignac number, because 3243121 - 2³ = 3243113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3243095 and 3243104.

It is not an unprimeable number, because it can be changed into a prime (3243101) 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, 231645 + ... + 231658.

It is an arithmetic number, because the mean of its divisors is an integer number (926608).

Almost surely, 2^3243121 is an apocalyptic number.

It is an amenable number.

3243121 is a deficient number, since it is larger than the sum of its proper divisors (463311).

3243121 is an equidigital number, since it uses as much as digits as its factorization.

3243121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463310.

The product of its digits is 144, while the sum is 16.

The square root of 3243121 is about 1800.8667357692. The cubic root of 3243121 is about 148.0202218534.

Adding to 3243121 its reverse (1213423), we get a palindrome (4456544).

It can be divided in two parts, 3243 and 121, that added together give a square (3364 = 58²).

The spelling of 3243121 in words is "three million, two hundred forty-three thousand, one hundred twenty-one".