311202013013 has 4 divisors (see below), whose sum is σ = 321933116940. Its totient is φ = 300470909088.

The previous prime is 311202012997. The next prime is 311202013021. The reversal of 311202013013 is 310310202113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72903780049 + 238298232964 = 270007^2 + 488158^2 .

It is a cyclic number.

It is not a de Polignac number, because 311202013013 - 2⁴ = 311202012997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311202012982 and 311202013000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311202013093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5365551920 + ... + 5365551977.

It is an arithmetic number, because the mean of its divisors is an integer number (80483279235).

Almost surely, 2^311202013013 is an apocalyptic number.

It is an amenable number.

311202013013 is a deficient number, since it is larger than the sum of its proper divisors (10731103927).

311202013013 is a wasteful number, since it uses less digits than its factorization.

311202013013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10731103926.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 311202013013 its reverse (310310202113), we get a palindrome (621512215126).

The spelling of 311202013013 in words is "three hundred eleven billion, two hundred two million, thirteen thousand, thirteen".