321111303311 has 4 divisors (see below), whose sum is σ = 321125095824. Its totient is φ = 321097510800.

The previous prime is 321111303277. The next prime is 321111303319. The reversal of 321111303311 is 113303111123.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321111303311 is a prime.

It is a super-2 number, since 2×321111303311² (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 (321111303319) 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, 6861275 + ... + 6907916.

It is an arithmetic number, because the mean of its divisors is an integer number (80281273956).

Almost surely, 2^321111303311 is an apocalyptic number.

321111303311 is a deficient number, since it is larger than the sum of its proper divisors (13792513).

321111303311 is a wasteful number, since it uses less digits than its factorization.

321111303311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13792512.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 321111303311 its reverse (113303111123), we get a palindrome (434414414434).

The spelling of 321111303311 in words is "three hundred twenty-one billion, one hundred eleven million, three hundred three thousand, three hundred eleven".