1320311110005 has 24 divisors (see below), whose sum is σ = 2341761103968. Its totient is φ = 687789972576.

The previous prime is 1320311109989. The next prime is 1320311110007. The reversal of 1320311110005 is 5000111130231.

It is not a de Polignac number, because 1320311110005 - 2⁴ = 1320311109989 is a prime.

It is a super-2 number, since 2×1320311110005² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320311110005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320311110007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 341163727 + ... + 341167596.

It is an arithmetic number, because the mean of its divisors is an integer number (97573379332).

Almost surely, 2^{1320311110005} is an apocalyptic number.

1320311110005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1320311110005 is a deficient number, since it is larger than the sum of its proper divisors (1021449993963).

1320311110005 is a wasteful number, since it uses less digits than its factorization.

1320311110005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682331377 (or 682331374 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

Adding to 1320311110005 its reverse (5000111130231), we get a palindrome (6320422240236).

The spelling of 1320311110005 in words is "one trillion, three hundred twenty billion, three hundred eleven million, one hundred ten thousand, five".