311211031013 has 8 divisors (see below), whose sum is σ = 312627369600. Its totient is φ = 309795382368.

The previous prime is 311211030971. The next prime is 311211031051. The reversal of 311211031013 is 310130112113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311211031013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 311211030982 and 311211031000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311211031093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742718 + ... + 1083536.

It is an arithmetic number, because the mean of its divisors is an integer number (39078421200).

Almost surely, 2^311211031013 is an apocalyptic number.

It is an amenable number.

311211031013 is a deficient number, since it is larger than the sum of its proper divisors (1416338587).

311211031013 is a wasteful number, since it uses less digits than its factorization.

311211031013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344971.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 311211031013 its reverse (310130112113), we get a palindrome (621341143126).

The spelling of 311211031013 in words is "three hundred eleven billion, two hundred eleven million, thirty-one thousand, thirteen".