1311301223 has 4 divisors (see below), whose sum is σ = 1321311288. Its totient is φ = 1301291160.

The previous prime is 1311301217. The next prime is 1311301247. The reversal of 1311301223 is 3221031131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3221031131 = 29 ⋅111070039.

It is a cyclic number.

It is not a de Polignac number, because 1311301223 - 2²⁸ = 1042865767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311301213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5004836 + ... + 5005097.

It is an arithmetic number, because the mean of its divisors is an integer number (330327822).

Almost surely, 2^1311301223 is an apocalyptic number.

1311301223 is a deficient number, since it is larger than the sum of its proper divisors (10010065).

1311301223 is a wasteful number, since it uses less digits than its factorization.

1311301223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010064.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1311301223 is about 36211.8933915364. The cubic root of 1311301223 is about 1094.5463458598.

Adding to 1311301223 its reverse (3221031131), we get a palindrome (4532332354).

The spelling of 1311301223 in words is "one billion, three hundred eleven million, three hundred one thousand, two hundred twenty-three".