320443032145 has 8 divisors (see below), whose sum is σ = 387298054080. Its totient is φ = 254510148720.

The previous prime is 320443032139. The next prime is 320443032187. The reversal of 320443032145 is 541230344023.

It is a happy number.

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

It is not a de Polignac number, because 320443032145 - 2¹⁵ = 320442999377 is a prime.

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, 230533861 + ... + 230535250.

It is an arithmetic number, because the mean of its divisors is an integer number (48412256760).

Almost surely, 2^320443032145 is an apocalyptic number.

It is an amenable number.

320443032145 is a deficient number, since it is larger than the sum of its proper divisors (66855021935).

320443032145 is a wasteful number, since it uses less digits than its factorization.

320443032145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461069255.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 320443032145 its reverse (541230344023), we get a palindrome (861673376168).

The spelling of 320443032145 in words is "three hundred twenty billion, four hundred forty-three million, thirty-two thousand, one hundred forty-five".