8131113 has 6 divisors (see below), whose sum is σ = 11744954. Its totient is φ = 5420736.

The previous prime is 8131111. The next prime is 8131127. The reversal of 8131113 is 3111318.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8020224 + 110889 = 2832^2 + 333^2 .

It is not a de Polignac number, because 8131113 - 2¹ = 8131111 is a prime.

It is a super-2 number, since 2×8131113² = 132229997237538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8131111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 451720 + ... + 451737.

Almost surely, 2^8131113 is an apocalyptic number.

It is an amenable number.

8131113 is a deficient number, since it is larger than the sum of its proper divisors (3613841).

8131113 is a wasteful number, since it uses less digits than its factorization.

8131113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903463 (or 903460 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 8131113 is about 2851.5106522684. The cubic root of 8131113 is about 201.0866931296.

The spelling of 8131113 in words is "eight million, one hundred thirty-one thousand, one hundred thirteen".