131312543 has 8 divisors (see below), whose sum is σ = 137176416. Its totient is φ = 125461600.

The previous prime is 131312527. The next prime is 131312567. The reversal of 131312543 is 345213131.

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

It is a cyclic number.

It is not a de Polignac number, because 131312543 - 2⁴ = 131312527 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131312243) 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 7 ways as a sum of consecutive naturals, for example, 21713 + ... + 27093.

It is an arithmetic number, because the mean of its divisors is an integer number (17147052).

Almost surely, 2^131312543 is an apocalyptic number.

131312543 is a deficient number, since it is larger than the sum of its proper divisors (5863873).

131312543 is a wasteful number, since it uses less digits than its factorization.

131312543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6465.

The product of its digits is 1080, while the sum is 23.

The square root of 131312543 is about 11459.1685125929. The cubic root of 131312543 is about 508.2788874650.

Adding to 131312543 its reverse (345213131), we get a palindrome (476525674).

The spelling of 131312543 in words is "one hundred thirty-one million, three hundred twelve thousand, five hundred forty-three".