1311110445501 has 12 divisors (see below), whose sum is σ = 2005227740412. Its totient is φ = 822657534336.

The previous prime is 1311110445497. The next prime is 1311110445511. The reversal of 1311110445501 is 1055440111131.

It is a happy number.

1311110445501 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 1 + 104 + 4 + 550 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1213687805625 + 97422639876 = 1101675^2 + 312126^2 .

It is not a de Polignac number, because 1311110445501 - 2² = 1311110445497 is a prime.

It is a super-2 number, since 2×1311110445501² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311110445511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4284674506 + ... + 4284674811.

It is an arithmetic number, because the mean of its divisors is an integer number (167102311701).

Almost surely, 2^{1311110445501} is an apocalyptic number.

It is an amenable number.

1311110445501 is a deficient number, since it is larger than the sum of its proper divisors (694117294911).

1311110445501 is a wasteful number, since it uses less digits than its factorization.

1311110445501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8569349340 (or 8569349337 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

Adding to 1311110445501 its reverse (1055440111131), we get a palindrome (2366550556632).

The spelling of 1311110445501 in words is "one trillion, three hundred eleven billion, one hundred ten million, four hundred forty-five thousand, five hundred one".