311322302331121 has 4 divisors (see below), whose sum is σ = 329635378938852. Its totient is φ = 293009225723392.

The previous prime is 311322302331097. The next prime is 311322302331143. The reversal of 311322302331121 is 121133203223113.

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

It can be written as a sum of positive squares in 2 ways, for example, as 156442684367025 + 154879617964096 = 12507705^2 + 12445064^2 .

It is a cyclic number.

It is not a de Polignac number, because 311322302331121 - 2²¹ = 311322300233969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311322302331121.

It is not an unprimeable number, because it can be changed into a prime (311322302331151) 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, 9156538303840 + ... + 9156538303873.

It is an arithmetic number, because the mean of its divisors is an integer number (82408844734713).

Almost surely, 2^{311322302331121} is an apocalyptic number.

It is an amenable number.

311322302331121 is a deficient number, since it is larger than the sum of its proper divisors (18313076607731).

311322302331121 is a wasteful number, since it uses less digits than its factorization.

311322302331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18313076607730.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 311322302331121 its reverse (121133203223113), we get a palindrome (432455505554234).

The spelling of 311322302331121 in words is "three hundred eleven trillion, three hundred twenty-two billion, three hundred two million, three hundred thirty-one thousand, one hundred twenty-one".