8613131 has 4 divisors (see below), whose sum is σ = 8634600. Its totient is φ = 8591664.

The previous prime is 8613127. The next prime is 8613149. The reversal of 8613131 is 1313168.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8613131 - 2² = 8613127 is a prime.

It is a super-2 number, since 2×8613131² = 148372051246322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8613097 and 8613106.

It is not an unprimeable number, because it can be changed into a prime (8613161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10121 + ... + 10938.

It is an arithmetic number, because the mean of its divisors is an integer number (2158650).

Almost surely, 2^8613131 is an apocalyptic number.

8613131 is a deficient number, since it is larger than the sum of its proper divisors (21469).

8613131 is a wasteful number, since it uses less digits than its factorization.

8613131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21468.

The product of its digits is 432, while the sum is 23.

The square root of 8613131 is about 2934.8136227025. The cubic root of 8613131 is about 204.9841827971.

Adding to 8613131 its reverse (1313168), we get a palindrome (9926299).

The spelling of 8613131 in words is "eight million, six hundred thirteen thousand, one hundred thirty-one".