321145243003215 has 96 divisors (see below), whose sum is σ = 572915542897152. Its totient is φ = 166362656544000.

The previous prime is 321145243003187. The next prime is 321145243003231. The reversal of 321145243003215 is 512300342541123.

321145243003215 is a `hidden beast` number, since 3 + 2 + 1 + 1 + 4 + 5 + 2 + 430 + 0 + 3 + 215 = 666.

It is not a de Polignac number, because 321145243003215 - 2⁵ = 321145243003183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321145243003215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 59282560 + ... + 64472570.

It is an arithmetic number, because the mean of its divisors is an integer number (5967870238512).

Almost surely, 2^{321145243003215} is an apocalyptic number.

321145243003215 is a deficient number, since it is larger than the sum of its proper divisors (251770299893937).

321145243003215 is a wasteful number, since it uses less digits than its factorization.

321145243003215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190381 (or 5190378 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 321145243003215 its reverse (512300342541123), we get a palindrome (833445585544338).

The spelling of 321145243003215 in words is "three hundred twenty-one trillion, one hundred forty-five billion, two hundred forty-three million, three thousand, two hundred fifteen".