311102230021 has 4 divisors (see below), whose sum is σ = 339384250944. Its totient is φ = 282820209100.

The previous prime is 311102230003. The next prime is 311102230051. The reversal of 311102230021 is 120032201113.

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 not a de Polignac number, because 311102230021 - 2⁹ = 311102229509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311102229977 and 311102230004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311102230051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14141010445 + ... + 14141010466.

It is an arithmetic number, because the mean of its divisors is an integer number (84846062736).

Almost surely, 2^311102230021 is an apocalyptic number.

It is an amenable number.

311102230021 is a deficient number, since it is larger than the sum of its proper divisors (28282020923).

311102230021 is a wasteful number, since it uses less digits than its factorization.

311102230021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28282020922.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 311102230021 its reverse (120032201113), we get a palindrome (431134431134).

The spelling of 311102230021 in words is "three hundred eleven billion, one hundred two million, two hundred thirty thousand, twenty-one".