1311200143441 has 4 divisors (see below), whose sum is σ = 1314242371584. Its totient is φ = 1308157915300.

The previous prime is 1311200143369. The next prime is 1311200143453. The reversal of 1311200143441 is 1443410021131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1311200143441 - 2⁷ = 1311200143313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311200143481) 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, 1521113425 + ... + 1521114286.

It is an arithmetic number, because the mean of its divisors is an integer number (328560592896).

Almost surely, 2^{1311200143441} is an apocalyptic number.

It is an amenable number.

1311200143441 is a deficient number, since it is larger than the sum of its proper divisors (3042228143).

1311200143441 is an equidigital number, since it uses as much as digits as its factorization.

1311200143441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042228142.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1311200143441 its reverse (1443410021131), we get a palindrome (2754610164572).

The spelling of 1311200143441 in words is "one trillion, three hundred eleven billion, two hundred million, one hundred forty-three thousand, four hundred forty-one".