311220032311 has 4 divisors (see below), whose sum is σ = 321259388224. Its totient is φ = 301180676400.

The previous prime is 311220032261. The next prime is 311220032329. The reversal of 311220032311 is 113230022113.

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 311220032311 - 2⁷ = 311220032183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311220032341) 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, 5019677910 + ... + 5019677971.

It is an arithmetic number, because the mean of its divisors is an integer number (80314847056).

Almost surely, 2^311220032311 is an apocalyptic number.

311220032311 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

311220032311 is a deficient number, since it is larger than the sum of its proper divisors (10039355913).

311220032311 is a wasteful number, since it uses less digits than its factorization.

311220032311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10039355912.

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

Adding to 311220032311 its reverse (113230022113), we get a palindrome (424450054424).

The spelling of 311220032311 in words is "three hundred eleven billion, two hundred twenty million, thirty-two thousand, three hundred eleven".