1311442223 has 24 divisors (see below), whose sum is σ = 1646574048. Its totient is φ = 1035308736.

The previous prime is 1311442213. The next prime is 1311442241. The reversal of 1311442223 is 3222441131.

It is not a de Polignac number, because 1311442223 - 2²⁴ = 1294665007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311442213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318365 + ... + 322457.

It is an arithmetic number, because the mean of its divisors is an integer number (68607252).

Almost surely, 2^1311442223 is an apocalyptic number.

1311442223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1311442223 is a deficient number, since it is larger than the sum of its proper divisors (335131825).

1311442223 is a wasteful number, since it uses less digits than its factorization.

1311442223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623 (or 4616 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1311442223 is about 36213.8402133770. The cubic root of 1311442223 is about 1094.5855754690.

Adding to 1311442223 its reverse (3222441131), we get a palindrome (4533883354).

The spelling of 1311442223 in words is "one billion, three hundred eleven million, four hundred forty-two thousand, two hundred twenty-three".