131358503 has 4 divisors (see below), whose sum is σ = 131382168. Its totient is φ = 131334840.

The previous prime is 131358499. The next prime is 131358509. The reversal of 131358503 is 305853131.

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 131358503 - 2² = 131358499 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 (131358509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1508 + ... + 16278.

It is an arithmetic number, because the mean of its divisors is an integer number (32845542).

Almost surely, 2^131358503 is an apocalyptic number.

131358503 is a deficient number, since it is larger than the sum of its proper divisors (23665).

131358503 is an equidigital number, since it uses as much as digits as its factorization.

131358503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23664.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 131358503 is about 11461.1737182542. The cubic root of 131358503 is about 508.3381805384.

The spelling of 131358503 in words is "one hundred thirty-one million, three hundred fifty-eight thousand, five hundred three".