320310042545 has 8 divisors (see below), whose sum is σ = 384385225896. Its totient is φ = 256239250816.

The previous prime is 320310042523. The next prime is 320310042557. The reversal of 320310042545 is 545240013023.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 450797824 + 319859244721 = 21232^2 + 565561^2 .

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 320310042545 - 2¹⁰ = 320310041521 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, 935252 + ... + 1230981.

It is an arithmetic number, because the mean of its divisors is an integer number (48048153237).

Almost surely, 2^320310042545 is an apocalyptic number.

It is an amenable number.

320310042545 is a deficient number, since it is larger than the sum of its proper divisors (64075183351).

320310042545 is a wasteful number, since it uses less digits than its factorization.

320310042545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195811.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 320310042545 its reverse (545240013023), we get a palindrome (865550055568).

The spelling of 320310042545 in words is "three hundred twenty billion, three hundred ten million, forty-two thousand, five hundred forty-five".