1311103242 has 24 divisors (see below), whose sum is σ = 2845586016. Its totient is φ = 436286376.

The previous prime is 1311103217. The next prime is 1311103259. The reversal of 1311103242 is 2423011131.

It is a super-2 number, since 2×1311103242² = 3437983422365821128, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51478 + ... + 72609.

It is an arithmetic number, because the mean of its divisors is an integer number (118566084).

Almost surely, 2^1311103242 is an apocalyptic number.

1311103242 is an abundant number, since it is smaller than the sum of its proper divisors (1534482774).

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

1311103242 is a wasteful number, since it uses less digits than its factorization.

1311103242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124682 (or 124679 counting only the distinct ones).

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

The square root of 1311103242 is about 36209.1596422784. The cubic root of 1311103242 is about 1094.4912580119.

Adding to 1311103242 its reverse (2423011131), we get a palindrome (3734114373).

The spelling of 1311103242 in words is "one billion, three hundred eleven million, one hundred three thousand, two hundred forty-two".