323145121 has 16 divisors (see below), whose sum is σ = 357438928. Its totient is φ = 290304000.

The previous prime is 323145089. The next prime is 323145131. The reversal of 323145121 is 121541323.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 164762896 + 158382225 = 12836^2 + 12585^2 .

It is a cyclic number.

It is not a de Polignac number, because 323145121 - 2⁵ = 323145089 is a prime.

It is a super-2 number, since 2×323145121² = 208845538452209282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 323145092 and 323145101.

It is not an unprimeable number, because it can be changed into a prime (323145131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74821 + ... + 79021.

It is an arithmetic number, because the mean of its divisors is an integer number (22339933).

Almost surely, 2^323145121 is an apocalyptic number.

It is an amenable number.

323145121 is a deficient number, since it is larger than the sum of its proper divisors (34293807).

323145121 is a wasteful number, since it uses less digits than its factorization.

323145121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372.

The product of its digits is 720, while the sum is 22.

The square root of 323145121 is about 17976.2376764439. The cubic root of 323145121 is about 686.2239442310.

Adding to 323145121 its reverse (121541323), we get a palindrome (444686444).

The spelling of 323145121 in words is "three hundred twenty-three million, one hundred forty-five thousand, one hundred twenty-one".