1311454340223 has 4 divisors (see below), whose sum is σ = 1748605786968. Its totient is φ = 874302893480.

The previous prime is 1311454340197. The next prime is 1311454340237. The reversal of 1311454340223 is 3220434541131.

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 1311454340223 - 2⁶ = 1311454340159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311454300223) 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, 218575723368 + ... + 218575723373.

It is an arithmetic number, because the mean of its divisors is an integer number (437151446742).

Almost surely, 2^{1311454340223} is an apocalyptic number.

1311454340223 is a deficient number, since it is larger than the sum of its proper divisors (437151446745).

1311454340223 is an equidigital number, since it uses as much as digits as its factorization.

1311454340223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437151446744.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 1311454340223 its reverse (3220434541131), we get a palindrome (4531888881354).

The spelling of 1311454340223 in words is "one trillion, three hundred eleven billion, four hundred fifty-four million, three hundred forty thousand, two hundred twenty-three".