311121333113 has 8 divisors (see below), whose sum is σ = 332444815560. Its totient is φ = 290133653760.

The previous prime is 311121333091. The next prime is 311121333119. The reversal of 311121333113 is 311333121113.

It can be written as a sum of positive squares in 4 ways, for example, as 94345422649 + 216775910464 = 307157^2 + 465592^2 .

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

It is not a de Polignac number, because 311121333113 - 2¹² = 311121329017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311121333119) 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, 83948858 + ... + 83952563.

It is an arithmetic number, because the mean of its divisors is an integer number (41555601945).

Almost surely, 2^311121333113 is an apocalyptic number.

It is an amenable number.

311121333113 is a deficient number, since it is larger than the sum of its proper divisors (21323482447).

311121333113 is a wasteful number, since it uses less digits than its factorization.

311121333113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167901547.

The product of its digits is 486, while the sum is 23.

Adding to 311121333113 its reverse (311333121113), we get a palindrome (622454454226).

The spelling of 311121333113 in words is "three hundred eleven billion, one hundred twenty-one million, three hundred thirty-three thousand, one hundred thirteen".