13111310321 has 16 divisors (see below), whose sum is σ = 13649990400. Its totient is φ = 12578646528.

The previous prime is 13111310291. The next prime is 13111310327. The reversal of 13111310321 is 12301311131.

It is not a de Polignac number, because 13111310321 - 2²² = 13107116017 is a prime.

It is a super-2 number, since 2×13111310321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13111310321.

It is not an unprimeable number, because it can be changed into a prime (13111310327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3623105 + ... + 3626721.

It is an arithmetic number, because the mean of its divisors is an integer number (853124400).

Almost surely, 2^13111310321 is an apocalyptic number.

It is an amenable number.

13111310321 is a deficient number, since it is larger than the sum of its proper divisors (538680079).

13111310321 is a wasteful number, since it uses less digits than its factorization.

13111310321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408.

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

Adding to 13111310321 its reverse (12301311131), we get a palindrome (25412621452).

The spelling of 13111310321 in words is "thirteen billion, one hundred eleven million, three hundred ten thousand, three hundred twenty-one".