311121131120 has 40 divisors (see below), whose sum is σ = 746690720640. Its totient is φ = 120433985280.

The previous prime is 311121131117. The next prime is 311121131147. The reversal of 311121131120 is 21131121113.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62723555 + ... + 62728514.

It is an arithmetic number, because the mean of its divisors is an integer number (18667268016).

Almost surely, 2^311121131120 is an apocalyptic number.

It is an amenable number.

311121131120 is an abundant number, since it is smaller than the sum of its proper divisors (435569589520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311121131120 is a wasteful number, since it uses less digits than its factorization.

311121131120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125452113 (or 125452107 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 311121131120 its reverse (21131121113), we get a palindrome (332252252233).

The spelling of 311121131120 in words is "three hundred eleven billion, one hundred twenty-one million, one hundred thirty-one thousand, one hundred twenty".