1311312012055 has 8 divisors (see below), whose sum is σ = 1573595487072. Its totient is φ = 1049035561248.

The previous prime is 1311312012037. The next prime is 1311312012071. The reversal of 1311312012055 is 5502102131131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311312012055 - 2²³ = 1311303623447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1336219 + ... + 2099548.

It is an arithmetic number, because the mean of its divisors is an integer number (196699435884).

Almost surely, 2^{1311312012055} is an apocalyptic number.

1311312012055 is a deficient number, since it is larger than the sum of its proper divisors (262283475017).

1311312012055 is an equidigital number, since it uses as much as digits as its factorization.

1311312012055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512105.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 1311312012055 its reverse (5502102131131), we get a palindrome (6813414143186).

The spelling of 1311312012055 in words is "one trillion, three hundred eleven billion, three hundred twelve million, twelve thousand, fifty-five".