131004103 has 4 divisors (see below), whose sum is σ = 131477320. Its totient is φ = 130530888.

The previous prime is 131004089. The next prime is 131004191. The reversal of 131004103 is 301400131.

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 131004103 - 2¹³ = 130995911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131002103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236193 + ... + 236746.

It is an arithmetic number, because the mean of its divisors is an integer number (32869330).

Almost surely, 2^131004103 is an apocalyptic number.

131004103 is a deficient number, since it is larger than the sum of its proper divisors (473217).

131004103 is an equidigital number, since it uses as much as digits as its factorization.

131004103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473216.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 131004103 is about 11445.7023812434. The cubic root of 131004103 is about 507.8806100795.

Adding to 131004103 its reverse (301400131), we get a palindrome (432404234).

The spelling of 131004103 in words is "one hundred thirty-one million, four thousand, one hundred three".