8131361 has 16 divisors (see below), whose sum is σ = 9582720. Its totient is φ = 6756480.

The previous prime is 8131349. The next prime is 8131363. The reversal of 8131361 is 1631318.

It is a cyclic number.

It is not a de Polignac number, because 8131361 - 2¹⁰ = 8130337 is a prime.

It is a super-2 number, since 2×8131361² = 132238063424642, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8131363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58430 + ... + 58568.

It is an arithmetic number, because the mean of its divisors is an integer number (598920).

Almost surely, 2^8131361 is an apocalyptic number.

It is an amenable number.

8131361 is a deficient number, since it is larger than the sum of its proper divisors (1451359).

8131361 is a wasteful number, since it uses less digits than its factorization.

8131361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344.

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

The square root of 8131361 is about 2851.5541376590. The cubic root of 8131361 is about 201.0887374988.

Adding to 8131361 its reverse (1631318), we get a palindrome (9762679).

The spelling of 8131361 in words is "eight million, one hundred thirty-one thousand, three hundred sixty-one".