7113531 has 16 divisors (see below), whose sum is σ = 10149408. Its totient is φ = 4416000.

The previous prime is 7113527. The next prime is 7113553. The reversal of 7113531 is 1353117.

It is not a de Polignac number, because 7113531 - 2² = 7113527 is a prime.

It is a super-2 number, since 2×7113531² = 101204646575922, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7113498 and 7113507.

It is not an unprimeable number, because it can be changed into a prime (7112531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4461 + ... + 5841.

It is an arithmetic number, because the mean of its divisors is an integer number (634338).

Almost surely, 2^7113531 is an apocalyptic number.

7113531 is a deficient number, since it is larger than the sum of its proper divisors (3035877).

7113531 is a wasteful number, since it uses less digits than its factorization.

7113531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502.

The product of its digits is 315, while the sum is 21.

The square root of 7113531 is about 2667.1203572392. The cubic root of 7113531 is about 192.3217532570.

Adding to 7113531 its reverse (1353117), we get a palindrome (8466648).

The spelling of 7113531 in words is "seven million, one hundred thirteen thousand, five hundred thirty-one".