1311113131 has 8 divisors (see below), whose sum is σ = 1318420800. Its totient is φ = 1303821120.

The previous prime is 1311113119. The next prime is 1311113161. The reversal of 1311113131 is 1313111131.

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 1311113131 - 2⁹ = 1311112619 is a prime.

It is a super-2 number, since 2×1311113131² = 3438035284561246322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311113161) 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, 189961 + ... + 196741.

It is an arithmetic number, because the mean of its divisors is an integer number (164802600).

Almost surely, 2^1311113131 is an apocalyptic number.

1311113131 is a deficient number, since it is larger than the sum of its proper divisors (7307669).

1311113131 is an equidigital number, since it uses as much as digits as its factorization.

1311113131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7829.

The product of its digits is 27, while the sum is 16.

The square root of 1311113131 is about 36209.2961958666. The cubic root of 1311113131 is about 1094.4940097395.

Adding to 1311113131 its reverse (1313111131), we get a palindrome (2624224262).

The spelling of 1311113131 in words is "one billion, three hundred eleven million, one hundred thirteen thousand, one hundred thirty-one".