320312231011 has 4 divisors (see below), whose sum is σ = 320597461192. Its totient is φ = 320027000832.

The previous prime is 320312230991. The next prime is 320312231021. The reversal of 320312231011 is 110132213023.

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 320312231011 - 2²¹ = 320310133859 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 320312231011.

It is not an unprimeable number, because it can be changed into a prime (320312231021) 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, 142613406 + ... + 142615651.

It is an arithmetic number, because the mean of its divisors is an integer number (80149365298).

Almost surely, 2^320312231011 is an apocalyptic number.

320312231011 is a deficient number, since it is larger than the sum of its proper divisors (285230181).

320312231011 is a wasteful number, since it uses less digits than its factorization.

320312231011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285230180.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 320312231011 its reverse (110132213023), we get a palindrome (430444444034).

The spelling of 320312231011 in words is "three hundred twenty billion, three hundred twelve million, two hundred thirty-one thousand, eleven".