1311103223 has 8 divisors (see below), whose sum is σ = 1388592720. Its totient is φ = 1233654400.

The previous prime is 1311103217. The next prime is 1311103259. The reversal of 1311103223 is 3223011131.

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 1311103223 - 2⁶ = 1311103159 is a prime.

It is a super-2 number, since 2×1311103223² = 3437983322721975458, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311100223) 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, 78233 + ... + 93501.

It is an arithmetic number, because the mean of its divisors is an integer number (173574090).

Almost surely, 2^1311103223 is an apocalyptic number.

1311103223 is a deficient number, since it is larger than the sum of its proper divisors (77489497).

1311103223 is a wasteful number, since it uses less digits than its factorization.

1311103223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20337.

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

The square root of 1311103223 is about 36209.1593799138. The cubic root of 1311103223 is about 1094.4912527249.

Adding to 1311103223 its reverse (3223011131), we get a palindrome (4534114354).

The spelling of 1311103223 in words is "one billion, three hundred eleven million, one hundred three thousand, two hundred twenty-three".