13111201312 has 96 divisors (see below), whose sum is σ = 29896231680. Its totient is φ = 5593927680.

The previous prime is 13111201307. The next prime is 13111201331. The reversal of 13111201312 is 21310211131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2372889 + ... + 2378407.

It is an arithmetic number, because the mean of its divisors is an integer number (311419080).

Almost surely, 2^13111201312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13111201312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14948115840).

13111201312 is an abundant number, since it is smaller than the sum of its proper divisors (16785030368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13111201312 is a wasteful number, since it uses less digits than its factorization.

13111201312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5954 (or 5946 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13111201312 its reverse (21310211131), we get a palindrome (34421412443).

The spelling of 13111201312 in words is "thirteen billion, one hundred eleven million, two hundred one thousand, three hundred twelve".