8103131 has 4 divisors (see below), whose sum is σ = 8124672. Its totient is φ = 8081592.

The previous prime is 8103127. The next prime is 8103149. The reversal of 8103131 is 1313018.

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 8103131 - 2² = 8103127 is a prime.

It is a super-2 number, since 2×8103131² = 131321464006322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8103031) 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, 10196 + ... + 10961.

It is an arithmetic number, because the mean of its divisors is an integer number (2031168).

Almost surely, 2^8103131 is an apocalyptic number.

8103131 is a deficient number, since it is larger than the sum of its proper divisors (21541).

8103131 is a wasteful number, since it uses less digits than its factorization.

8103131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21540.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 8103131 is about 2846.5999016370. The cubic root of 8103131 is about 200.8557581674.

Adding to 8103131 its reverse (1313018), we get a palindrome (9416149).

The spelling of 8103131 in words is "eight million, one hundred three thousand, one hundred thirty-one".