320202312311 has 4 divisors (see below), whose sum is σ = 365945499792. Its totient is φ = 274459124832.

The previous prime is 320202312289. The next prime is 320202312349. The reversal of 320202312311 is 113213202023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113213202023 = 17 ⋅6659600119.

It is a cyclic number.

It is not a de Polignac number, because 320202312311 - 2³⁰ = 319128570487 is a prime.

It is a super-2 number, since 2×320202312311² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320202312511) 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, 22871593730 + ... + 22871593743.

It is an arithmetic number, because the mean of its divisors is an integer number (91486374948).

Almost surely, 2^320202312311 is an apocalyptic number.

320202312311 is a deficient number, since it is larger than the sum of its proper divisors (45743187481).

320202312311 is an equidigital number, since it uses as much as digits as its factorization.

320202312311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45743187480.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 320202312311 its reverse (113213202023), we get a palindrome (433415514334).

The spelling of 320202312311 in words is "three hundred twenty billion, two hundred two million, three hundred twelve thousand, three hundred eleven".