1311501441323 has 4 divisors (see below), whose sum is σ = 1313690926800. Its totient is φ = 1309311955848.

The previous prime is 1311501441307. The next prime is 1311501441347. The reversal of 1311501441323 is 3231441051131.

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

It is a cyclic number.

It is not a de Polignac number, because 1311501441323 - 2⁴ = 1311501441307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311501441373) 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, 1094741840 + ... + 1094743037.

It is an arithmetic number, because the mean of its divisors is an integer number (328422731700).

Almost surely, 2^{1311501441323} is an apocalyptic number.

1311501441323 is a deficient number, since it is larger than the sum of its proper divisors (2189485477).

1311501441323 is an equidigital number, since it uses as much as digits as its factorization.

1311501441323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189485476.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 1311501441323 its reverse (3231441051131), we get a palindrome (4542942492454).

The spelling of 1311501441323 in words is "one trillion, three hundred eleven billion, five hundred one million, four hundred forty-one thousand, three hundred twenty-three".