320213521223 has 4 divisors (see below), whose sum is σ = 320399369448. Its totient is φ = 320027673000.

The previous prime is 320213521219. The next prime is 320213521261. The reversal of 320213521223 is 322125312023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322125312023 = 195229 ⋅1649987.

It is a cyclic number.

It is not a de Polignac number, because 320213521223 - 2² = 320213521219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320213521192 and 320213521201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320213521213) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 92921528 + ... + 92924973.

It is an arithmetic number, because the mean of its divisors is an integer number (80099842362).

Almost surely, 2^320213521223 is an apocalyptic number.

320213521223 is a deficient number, since it is larger than the sum of its proper divisors (185848225).

320213521223 is a wasteful number, since it uses less digits than its factorization.

320213521223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185848224.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 320213521223 its reverse (322125312023), we get a palindrome (642338833246).

The spelling of 320213521223 in words is "three hundred twenty billion, two hundred thirteen million, five hundred twenty-one thousand, two hundred twenty-three".