321324145 has 32 divisors (see below), whose sum is σ = 418535424. Its totient is φ = 236121600.

The previous prime is 321324137. The next prime is 321324151. The reversal of 321324145 is 541423123.

It is not a de Polignac number, because 321324145 - 2³ = 321324137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 616485 + ... + 617005.

It is an arithmetic number, because the mean of its divisors is an integer number (13079232).

Almost surely, 2^321324145 is an apocalyptic number.

It is an amenable number.

321324145 is a deficient number, since it is larger than the sum of its proper divisors (97211279).

321324145 is a wasteful number, since it uses less digits than its factorization.

321324145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753.

The product of its digits is 2880, while the sum is 25.

The square root of 321324145 is about 17925.5165894877. The cubic root of 321324145 is about 684.9325203920.

Adding to 321324145 its reverse (541423123), we get a palindrome (862747268).

The spelling of 321324145 in words is "three hundred twenty-one million, three hundred twenty-four thousand, one hundred forty-five".