320503304051 has 4 divisors (see below), whose sum is σ = 366289490352. Its totient is φ = 274717117752.

The previous prime is 320503303999. The next prime is 320503304081. The reversal of 320503304051 is 150403305023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150403305023 = 6491 ⋅23171053.

It is not a de Polignac number, because 320503304051 - 2²² = 320499109747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320503304051.

It is not an unprimeable number, because it can be changed into a prime (320503304081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22893093140 + ... + 22893093153.

It is an arithmetic number, because the mean of its divisors is an integer number (91572372588).

Almost surely, 2^320503304051 is an apocalyptic number.

320503304051 is a deficient number, since it is larger than the sum of its proper divisors (45786186301).

320503304051 is an equidigital number, since it uses as much as digits as its factorization.

320503304051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45786186300.

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 320503304051 its reverse (150403305023), we get a palindrome (470906609074).

The spelling of 320503304051 in words is "three hundred twenty billion, five hundred three million, three hundred four thousand, fifty-one".