320321532145 has 8 divisors (see below), whose sum is σ = 384529121856. Its totient is φ = 256161703536.

The previous prime is 320321532131. The next prime is 320321532163. The reversal of 320321532145 is 541235123023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320321532145 - 2⁹ = 320321531633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11925517 + ... + 11952346.

It is an arithmetic number, because the mean of its divisors is an integer number (48066140232).

Almost surely, 2^320321532145 is an apocalyptic number.

It is an amenable number.

320321532145 is a deficient number, since it is larger than the sum of its proper divisors (64207589711).

320321532145 is a wasteful number, since it uses less digits than its factorization.

320321532145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23880551.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 320321532145 its reverse (541235123023), we get a palindrome (861556655168).

The spelling of 320321532145 in words is "three hundred twenty billion, three hundred twenty-one million, five hundred thirty-two thousand, one hundred forty-five".