311023011321 has 48 divisors (see below), whose sum is σ = 504481573440. Its totient is φ = 182989272960.

The previous prime is 311023011307. The next prime is 311023011331. The reversal of 311023011321 is 123110320113.

311023011321 is a `hidden beast` number, since 3 + 110 + 230 + 1 + 1 + 321 = 666.

It is not a de Polignac number, because 311023011321 - 2⁵ = 311023011289 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 311023011294 and 311023011303.

It is not an unprimeable number, because it can be changed into a prime (311023011331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1526875 + ... + 1718543.

It is an arithmetic number, because the mean of its divisors is an integer number (10510032780).

Almost surely, 2^311023011321 is an apocalyptic number.

It is an amenable number.

311023011321 is a deficient number, since it is larger than the sum of its proper divisors (193458562119).

311023011321 is a wasteful number, since it uses less digits than its factorization.

311023011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192166 (or 192163 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 311023011321 its reverse (123110320113), we get a palindrome (434133331434).

The spelling of 311023011321 in words is "three hundred eleven billion, twenty-three million, eleven thousand, three hundred twenty-one".