1311230655045 has 32 divisors (see below), whose sum is σ = 2363908803840. Its totient is φ = 689473391040.

The previous prime is 1311230655019. The next prime is 1311230655071. The reversal of 1311230655045 is 5405560321131.

1311230655045 is a `hidden beast` number, since 1 + 3 + 112 + 30 + 6 + 5 + 504 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1311230655019) and next prime (1311230655071).

It is not a de Polignac number, because 1311230655045 - 2⁵ = 1311230655013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68390554 + ... + 68409723.

It is an arithmetic number, because the mean of its divisors is an integer number (73872150120).

Almost surely, 2^{1311230655045} is an apocalyptic number.

1311230655045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1311230655045 is a deficient number, since it is larger than the sum of its proper divisors (1052678148795).

1311230655045 is a wasteful number, since it uses less digits than its factorization.

1311230655045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136800362 (or 136800356 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 1311230655045 its reverse (5405560321131), we get a palindrome (6716790976176).

The spelling of 1311230655045 in words is "one trillion, three hundred eleven billion, two hundred thirty million, six hundred fifty-five thousand, forty-five".