131204320503 has 8 divisors (see below), whose sum is σ = 174940838400. Its totient is φ = 87468674808.

The previous prime is 131204320447. The next prime is 131204320523. The reversal of 131204320503 is 305023402131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131204320503 - 2¹⁰ = 131204319479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131204320523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329068 + ... + 608846.

It is an arithmetic number, because the mean of its divisors is an integer number (21867604800).

Almost surely, 2^131204320503 is an apocalyptic number.

131204320503 is a deficient number, since it is larger than the sum of its proper divisors (43736517897).

131204320503 is a wasteful number, since it uses less digits than its factorization.

131204320503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436101.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 131204320503 its reverse (305023402131), we get a palindrome (436227722634).

The spelling of 131204320503 in words is "one hundred thirty-one billion, two hundred four million, three hundred twenty thousand, five hundred three".