1313111242 has 16 divisors (see below), whose sum is σ = 2144829600. Its totient is φ = 600551280.

The previous prime is 1313111203. The next prime is 1313111273. The reversal of 1313111242 is 2421113131.

It is a super-2 number, since 2×1313111242² = 3448522267733565128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594684 + ... + 596887.

It is an arithmetic number, because the mean of its divisors is an integer number (134051850).

Almost surely, 2^1313111242 is an apocalyptic number.

1313111242 is a deficient number, since it is larger than the sum of its proper divisors (831718358).

1313111242 is a wasteful number, since it uses less digits than its factorization.

1313111242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191621.

The product of its digits is 144, while the sum is 19.

The square root of 1313111242 is about 36236.8768245830. The cubic root of 1313111242 is about 1095.0497234219.

Adding to 1313111242 its reverse (2421113131), we get a palindrome (3734224373).

The spelling of 1313111242 in words is "one billion, three hundred thirteen million, one hundred eleven thousand, two hundred forty-two".