320240104145 has 32 divisors (see below), whose sum is σ = 440417422368. Its totient is φ = 221444149248.

The previous prime is 320240104123. The next prime is 320240104157. The reversal of 320240104145 is 541401042023.

It can be written as a sum of positive squares in 16 ways, for example, as 63815348689 + 256424755456 = 252617^2 + 506384^2 .

It is a cyclic number.

It is not a de Polignac number, because 320240104145 - 2¹⁰ = 320240103121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 517874 + ... + 953243.

It is an arithmetic number, because the mean of its divisors is an integer number (13763044449).

Almost surely, 2^320240104145 is an apocalyptic number.

It is an amenable number.

320240104145 is a deficient number, since it is larger than the sum of its proper divisors (120177318223).

320240104145 is a wasteful number, since it uses less digits than its factorization.

320240104145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471349.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 320240104145 its reverse (541401042023), we get a palindrome (861641146168).

The spelling of 320240104145 in words is "three hundred twenty billion, two hundred forty million, one hundred four thousand, one hundred forty-five".