323121225 has 48 divisors (see below), whose sum is σ = 612817920. Its totient is φ = 147163200.

The previous prime is 323121187. The next prime is 323121233. The reversal of 323121225 is 522121323.

It is not a de Polignac number, because 323121225 - 2¹⁰ = 323120201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 162286 + ... + 164264.

It is an arithmetic number, because the mean of its divisors is an integer number (12767040).

Almost surely, 2^323121225 is an apocalyptic number.

323121225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

323121225 is a deficient number, since it is larger than the sum of its proper divisors (289696695).

323121225 is a wasteful number, since it uses less digits than its factorization.

323121225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310 (or 2305 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 323121225 is about 17975.5730089474. The cubic root of 323121225 is about 686.2070288056.

Adding to 323121225 its reverse (522121323), we get a palindrome (845242548).

The spelling of 323121225 in words is "three hundred twenty-three million, one hundred twenty-one thousand, two hundred twenty-five".