311100020121 has 16 divisors (see below), whose sum is σ = 452658068928. Its totient is φ = 188483404800.

The previous prime is 311100020117. The next prime is 311100020131. The reversal of 311100020121 is 121020001113.

It is not a de Polignac number, because 311100020121 - 2² = 311100020117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311100020097 and 311100020106.

It is not an unprimeable number, because it can be changed into a prime (311100020131) 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 15 ways as a sum of consecutive naturals, for example, 1449676 + ... + 1650381.

It is an arithmetic number, because the mean of its divisors is an integer number (28291129308).

Almost surely, 2^311100020121 is an apocalyptic number.

It is an amenable number.

311100020121 is a deficient number, since it is larger than the sum of its proper divisors (141558048807).

311100020121 is a wasteful number, since it uses less digits than its factorization.

311100020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103112.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 311100020121 its reverse (121020001113), we get a palindrome (432120021234).

The spelling of 311100020121 in words is "three hundred eleven billion, one hundred million, twenty thousand, one hundred twenty-one".