1311103422 has 80 divisors (see below), whose sum is σ = 2988442512. Its totient is φ = 429580800.

The previous prime is 1311103397. The next prime is 1311103457. The reversal of 1311103422 is 2243011131.

1311103422 is a `hidden beast` number, since 1 + 311 + 10 + 342 + 2 = 666.

It is a super-2 number, since 2×1311103422² = 3437984366360220168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1311103395 and 1311103404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3713998 + ... + 3714350.

Almost surely, 2^1311103422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311103422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1494221256).

1311103422 is an abundant number, since it is smaller than the sum of its proper divisors (1677339090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311103422 is a wasteful number, since it uses less digits than its factorization.

1311103422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1311103422 is about 36209.1621278372. The cubic root of 1311103422 is about 1094.4913080991.

Adding to 1311103422 its reverse (2243011131), we get a palindrome (3554114553).

The spelling of 1311103422 in words is "one billion, three hundred eleven million, one hundred three thousand, four hundred twenty-two".