311103030121 has 16 divisors (see below), whose sum is σ = 340934223168. Its totient is φ = 282158136000.

The previous prime is 311103030109. The next prime is 311103030137. The reversal of 311103030121 is 121030301113.

It is not a de Polignac number, because 311103030121 - 2⁹ = 311103029609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311103030095 and 311103030104.

It is not an unprimeable number, because it can be changed into a prime (311103010121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732351 + ... + 1076356.

It is an arithmetic number, because the mean of its divisors is an integer number (21308388948).

Almost surely, 2^311103030121 is an apocalyptic number.

It is an amenable number.

311103030121 is a deficient number, since it is larger than the sum of its proper divisors (29831193047).

311103030121 is a wasteful number, since it uses less digits than its factorization.

311103030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808952.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 311103030121 its reverse (121030301113), we get a palindrome (432133331234).

The spelling of 311103030121 in words is "three hundred eleven billion, one hundred three million, thirty thousand, one hundred twenty-one".