311223032121 has 8 divisors (see below), whose sum is σ = 414971740224. Its totient is φ = 207478172720.

The previous prime is 311223032069. The next prime is 311223032189. The reversal of 311223032121 is 121230322113.

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 311223032121 - 2⁷ = 311223031993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (311223032521) 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 7 ways as a sum of consecutive naturals, for example, 767886 + ... + 1100951.

It is an arithmetic number, because the mean of its divisors is an integer number (51871467528).

Almost surely, 2^311223032121 is an apocalyptic number.

It is an amenable number.

311223032121 is a deficient number, since it is larger than the sum of its proper divisors (103748708103).

311223032121 is a wasteful number, since it uses less digits than its factorization.

311223032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924351.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 311223032121 its reverse (121230322113), we get a palindrome (432453354234).

The spelling of 311223032121 in words is "three hundred eleven billion, two hundred twenty-three million, thirty-two thousand, one hundred twenty-one".