131043603 has 16 divisors (see below), whose sum is σ = 185240576. Its totient is φ = 82257120.

The previous prime is 131043571. The next prime is 131043611. The reversal of 131043603 is 306340131.

It is not a de Polignac number, because 131043603 - 2⁵ = 131043571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131043603.

It is not an unprimeable number, because it can be changed into a prime (131043683) 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, 15601 + ... + 22482.

It is an arithmetic number, because the mean of its divisors is an integer number (11577536).

Almost surely, 2^131043603 is an apocalyptic number.

131043603 is a deficient number, since it is larger than the sum of its proper divisors (54196973).

131043603 is a wasteful number, since it uses less digits than its factorization.

131043603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38154.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 131043603 is about 11447.4277896827. The cubic root of 131043603 is about 507.9316498757.

Adding to 131043603 its reverse (306340131), we get a palindrome (437383734).

The spelling of 131043603 in words is "one hundred thirty-one million, forty-three thousand, six hundred three".