1311312152501 has 8 divisors (see below), whose sum is σ = 1486507703520. Its totient is φ = 1146734513712.

The previous prime is 1311312152443. The next prime is 1311312152581. The reversal of 1311312152501 is 1052512131131.

It is a happy number.

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 1311312152501 - 2¹⁰ = 1311312151477 is a prime.

It is a super-4 number, since 4×1311312152501⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311312152581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2654477795 + ... + 2654478288.

It is an arithmetic number, because the mean of its divisors is an integer number (185813462940).

Almost surely, 2^{1311312152501} is an apocalyptic number.

It is an amenable number.

1311312152501 is a deficient number, since it is larger than the sum of its proper divisors (175195551019).

1311312152501 is a wasteful number, since it uses less digits than its factorization.

1311312152501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5308956115.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 1311312152501 its reverse (1052512131131), we get a palindrome (2363824283632).

The spelling of 1311312152501 in words is "one trillion, three hundred eleven billion, three hundred twelve million, one hundred fifty-two thousand, five hundred one".