1311401533201 has 4 divisors (see below), whose sum is σ = 1311408182500. Its totient is φ = 1311394883904.

The previous prime is 1311401533193. The next prime is 1311401533217. The reversal of 1311401533201 is 1023351041131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 383260046400 + 928141486801 = 619080^2 + 963401^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311401533201 - 2³ = 1311401533193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311401533231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3019476 + ... + 3426373.

It is an arithmetic number, because the mean of its divisors is an integer number (327852045625).

Almost surely, 2^{1311401533201} is an apocalyptic number.

It is an amenable number.

1311401533201 is a deficient number, since it is larger than the sum of its proper divisors (6649299).

1311401533201 is an equidigital number, since it uses as much as digits as its factorization.

1311401533201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6649298.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 1311401533201 its reverse (1023351041131), we get a palindrome (2334752574332).

The spelling of 1311401533201 in words is "one trillion, three hundred eleven billion, four hundred one million, five hundred thirty-three thousand, two hundred one".