311322122101 has 4 divisors (see below), whose sum is σ = 314231674752. Its totient is φ = 308412569452.

The previous prime is 311322122099. The next prime is 311322122117. The reversal of 311322122101 is 101221223113.

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, and also an emirpimes, since its reverse is a distinct semiprime: 101221223113 = 17683 ⋅5724211.

It is a cyclic number.

It is not a de Polignac number, because 311322122101 - 2¹ = 311322122099 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 (311322122401) 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, 1454776165 + ... + 1454776378.

It is an arithmetic number, because the mean of its divisors is an integer number (78557918688).

Almost surely, 2^311322122101 is an apocalyptic number.

It is an amenable number.

311322122101 is a deficient number, since it is larger than the sum of its proper divisors (2909552651).

311322122101 is a wasteful number, since it uses less digits than its factorization.

311322122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909552650.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 311322122101 its reverse (101221223113), we get a palindrome (412543345214).

The spelling of 311322122101 in words is "three hundred eleven billion, three hundred twenty-two million, one hundred twenty-two thousand, one hundred one".