1311300223605 has 48 divisors (see below), whose sum is σ = 2275454488320. Its totient is φ = 698580921984.

The previous prime is 1311300223561. The next prime is 1311300223613. The reversal of 1311300223605 is 5063220031131.

1311300223605 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 30 + 0 + 2 + 23 + 605 = 666.

It is not a de Polignac number, because 1311300223605 - 2¹⁴ = 1311300207221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 192072202 + ... + 192079028.

It is an arithmetic number, because the mean of its divisors is an integer number (47405301840).

Almost surely, 2^{1311300223605} is an apocalyptic number.

1311300223605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311300223605 is a deficient number, since it is larger than the sum of its proper divisors (964154264715).

1311300223605 is a wasteful number, since it uses less digits than its factorization.

1311300223605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10970 (or 10967 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 1311300223605 its reverse (5063220031131), we get a palindrome (6374520254736).

The spelling of 1311300223605 in words is "one trillion, three hundred eleven billion, three hundred million, two hundred twenty-three thousand, six hundred five".