1311322223 has 8 divisors (see below), whose sum is σ = 1315074288. Its totient is φ = 1307577024.

The previous prime is 1311322213. The next prime is 1311322273. The reversal of 1311322223 is 3222231131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311322223 - 2¹⁴ = 1311305839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311322195 and 1311322204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311322213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812165 + ... + 813777.

It is an arithmetic number, because the mean of its divisors is an integer number (164384286).

Almost surely, 2^1311322223 is an apocalyptic number.

1311322223 is a deficient number, since it is larger than the sum of its proper divisors (3752065).

1311322223 is a wasteful number, since it uses less digits than its factorization.

1311322223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433.

The product of its digits is 432, while the sum is 20.

The square root of 1311322223 is about 36212.1833503588. The cubic root of 1311322223 is about 1094.5521887457.

Adding to 1311322223 its reverse (3222231131), we get a palindrome (4533553354).

The spelling of 1311322223 in words is "one billion, three hundred eleven million, three hundred twenty-two thousand, two hundred twenty-three".