7113131 has 4 divisors (see below), whose sum is σ = 7286664. Its totient is φ = 6939600.

The previous prime is 7113109. The next prime is 7113133. The reversal of 7113131 is 1313117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1313117 = 13 ⋅101009.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7113131 is a prime.

It is a super-2 number, since 2×7113131² = 101193265246322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7113133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86705 + ... + 86786.

It is an arithmetic number, because the mean of its divisors is an integer number (1821666).

Almost surely, 2^7113131 is an apocalyptic number.

7113131 is a deficient number, since it is larger than the sum of its proper divisors (173533).

7113131 is a wasteful number, since it uses less digits than its factorization.

7113131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173532.

The product of its digits is 63, while the sum is 17.

The square root of 7113131 is about 2667.0453689429. The cubic root of 7113131 is about 192.3181483833.

Adding to 7113131 its reverse (1313117), we get a palindrome (8426248).

The spelling of 7113131 in words is "seven million, one hundred thirteen thousand, one hundred thirty-one".