1311640233045 has 16 divisors (see below), whose sum is σ = 2118237687360. Its totient is φ = 693003686144.

The previous prime is 1311640232971. The next prime is 1311640233089. The reversal of 1311640233045 is 5403320461131.

It is a cyclic number.

It is not a de Polignac number, because 1311640233045 - 2¹⁷ = 1311640101973 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1311640232997 and 1311640233015.

It is a congruent number.

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, 408609060 + ... + 408612269.

It is an arithmetic number, because the mean of its divisors is an integer number (132389855460).

Almost surely, 2^{1311640233045} is an apocalyptic number.

1311640233045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311640233045 is a deficient number, since it is larger than the sum of its proper divisors (806597454315).

1311640233045 is a wasteful number, since it uses less digits than its factorization.

1311640233045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817221444.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 1311640233045 its reverse (5403320461131), we get a palindrome (6714960694176).

The spelling of 1311640233045 in words is "one trillion, three hundred eleven billion, six hundred forty million, two hundred thirty-three thousand, forty-five".