1311320140413 has 4 divisors (see below), whose sum is σ = 1748426853888. Its totient is φ = 874213426940.

The previous prime is 1311320140363. The next prime is 1311320140423. The reversal of 1311320140413 is 3140410231131.

It is a happy number.

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 1311320140413 - 2¹² = 1311320136317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311320140423) 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, 218553356733 + ... + 218553356738.

It is an arithmetic number, because the mean of its divisors is an integer number (437106713472).

Almost surely, 2^{1311320140413} is an apocalyptic number.

It is an amenable number.

1311320140413 is a deficient number, since it is larger than the sum of its proper divisors (437106713475).

1311320140413 is an equidigital number, since it uses as much as digits as its factorization.

1311320140413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437106713474.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 1311320140413 its reverse (3140410231131), we get a palindrome (4451730371544).

The spelling of 1311320140413 in words is "one trillion, three hundred eleven billion, three hundred twenty million, one hundred forty thousand, four hundred thirteen".