311304102031013 has 32 divisors (see below), whose sum is σ = 395140863000576. Its totient is φ = 238684163997888.

The previous prime is 311304102031007. The next prime is 311304102031037. The reversal of 311304102031013 is 310130201403113.

It is not a de Polignac number, because 311304102031013 - 2¹² = 311304102026917 is a prime.

It is a super-2 number, since 2×311304102031013² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 311304102031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311304102031073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312717131 + ... + 313711032.

It is an arithmetic number, because the mean of its divisors is an integer number (12348151968768).

Almost surely, 2^{311304102031013} is an apocalyptic number.

It is an amenable number.

311304102031013 is a deficient number, since it is larger than the sum of its proper divisors (83836760969563).

311304102031013 is a wasteful number, since it uses less digits than its factorization.

311304102031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626428353.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 311304102031013 its reverse (310130201403113), we get a palindrome (621434303434126).

The spelling of 311304102031013 in words is "three hundred eleven trillion, three hundred four billion, one hundred two million, thirty-one thousand, thirteen".