321453145 has 16 divisors (see below), whose sum is σ = 419307840. Its totient is φ = 235157184.

The previous prime is 321453131. The next prime is 321453169. The reversal of 321453145 is 541354123.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321453145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16155 + ... + 30064.

It is an arithmetic number, because the mean of its divisors is an integer number (26206740).

Almost surely, 2^321453145 is an apocalyptic number.

It is an amenable number.

321453145 is a deficient number, since it is larger than the sum of its proper divisors (97854695).

321453145 is a wasteful number, since it uses less digits than its factorization.

321453145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46344.

The product of its digits is 7200, while the sum is 28.

The square root of 321453145 is about 17929.1144510821. The cubic root of 321453145 is about 685.0241666577.

The spelling of 321453145 in words is "three hundred twenty-one million, four hundred fifty-three thousand, one hundred forty-five".