311220232211013 has 4 divisors (see below), whose sum is σ = 414960309614688. Its totient is φ = 207480154807340.

The previous prime is 311220232210999. The next prime is 311220232211039. The reversal of 311220232211013 is 310112232022113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311220232211013 - 2⁵ = 311220232210981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311220232201013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51870038701833 + ... + 51870038701838.

It is an arithmetic number, because the mean of its divisors is an integer number (103740077403672).

Almost surely, 2^{311220232211013} is an apocalyptic number.

It is an amenable number.

311220232211013 is a deficient number, since it is larger than the sum of its proper divisors (103740077403675).

311220232211013 is a wasteful number, since it uses less digits than its factorization.

311220232211013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103740077403674.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 311220232211013 its reverse (310112232022113), we get a palindrome (621332464233126).

The spelling of 311220232211013 in words is "three hundred eleven trillion, two hundred twenty billion, two hundred thirty-two million, two hundred eleven thousand, thirteen".