1312511242601 has 8 divisors (see below), whose sum is σ = 1413624966600. Its totient is φ = 1211419135872.

The previous prime is 1312511242579. The next prime is 1312511242619. The reversal of 1312511242601 is 1062421152131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 124945282576 + 1187565960025 = 353476^2 + 1089755^2 .

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 1312511242601 - 2³⁰ = 1311437500777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1312511242661) 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, 5278100 + ... + 5521173.

It is an arithmetic number, because the mean of its divisors is an integer number (176703120825).

Almost surely, 2^{1312511242601} is an apocalyptic number.

It is an amenable number.

1312511242601 is a deficient number, since it is larger than the sum of its proper divisors (101113723999).

1312511242601 is a wasteful number, since it uses less digits than its factorization.

1312511242601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10808635.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 1312511242601 its reverse (1062421152131), we get a palindrome (2374932394732).

The spelling of 1312511242601 in words is "one trillion, three hundred twelve billion, five hundred eleven million, two hundred forty-two thousand, six hundred one".