320212110051523 has 4 divisors (see below), whose sum is σ = 339048116525160. Its totient is φ = 301376103577888.

The previous prime is 320212110051481. The next prime is 320212110051529. The reversal of 320212110051523 is 325150011212023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320212110051523 - 2³⁷ = 320074671098051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320212110051491 and 320212110051500.

It is not an unprimeable number, because it can be changed into a prime (320212110051529) 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, 9418003236793 + ... + 9418003236826.

It is an arithmetic number, because the mean of its divisors is an integer number (84762029131290).

Almost surely, 2^{320212110051523} is an apocalyptic number.

320212110051523 is a deficient number, since it is larger than the sum of its proper divisors (18836006473637).

320212110051523 is a wasteful number, since it uses less digits than its factorization.

320212110051523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18836006473636.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 320212110051523 its reverse (325150011212023), we get a palindrome (645362121263546).

The spelling of 320212110051523 in words is "three hundred twenty trillion, two hundred twelve billion, one hundred ten million, fifty-one thousand, five hundred twenty-three".