1312313564145 has 64 divisors (see below), whose sum is σ = 2235568896000. Its totient is φ = 655495326720.

The previous prime is 1312313564141. The next prime is 1312313564153. The reversal of 1312313564145 is 5414653132131.

It is not a de Polignac number, because 1312313564145 - 2² = 1312313564141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312313564141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9752281 + ... + 9885929.

It is an arithmetic number, because the mean of its divisors is an integer number (34930764000).

Almost surely, 2^{1312313564145} is an apocalyptic number.

1312313564145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1312313564145 is a deficient number, since it is larger than the sum of its proper divisors (923255331855).

1312313564145 is a wasteful number, since it uses less digits than its factorization.

1312313564145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134070.

The product of its digits is 129600, while the sum is 39.

Adding to 1312313564145 its reverse (5414653132131), we get a palindrome (6726966696276).

The spelling of 1312313564145 in words is "one trillion, three hundred twelve billion, three hundred thirteen million, five hundred sixty-four thousand, one hundred forty-five".