311131142121 has 8 divisors (see below), whose sum is σ = 414896961024. Its totient is φ = 207393042320.

The previous prime is 311131142093. The next prime is 311131142183. The reversal of 311131142121 is 121241131113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311131142121 - 2²¹ = 311129044969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (311131142191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6903570 + ... + 6948491.

It is an arithmetic number, because the mean of its divisors is an integer number (51862120128).

Almost surely, 2^311131142121 is an apocalyptic number.

It is an amenable number.

311131142121 is a deficient number, since it is larger than the sum of its proper divisors (103765818903).

311131142121 is a wasteful number, since it uses less digits than its factorization.

311131142121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13859551.

The product of its digits is 144, while the sum is 21.

Adding to 311131142121 its reverse (121241131113), we get a palindrome (432372273234).

The spelling of 311131142121 in words is "three hundred eleven billion, one hundred thirty-one million, one hundred forty-two thousand, one hundred twenty-one".