131537543 has 2 divisors, whose sum is σ = 131537544. Its totient is φ = 131537542.

The previous prime is 131537521. The next prime is 131537563. The reversal of 131537543 is 345735131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131537543 - 2¹⁰ = 131536519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131537563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65768771 + 65768772.

It is an arithmetic number, because the mean of its divisors is an integer number (65768772).

Almost surely, 2^131537543 is an apocalyptic number.

131537543 is a deficient number, since it is larger than the sum of its proper divisors (1).

131537543 is an equidigital number, since it uses as much as digits as its factorization.

131537543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 32.

The square root of 131537543 is about 11468.9817769495. The cubic root of 131537543 is about 508.5690285542.

The spelling of 131537543 in words is "one hundred thirty-one million, five hundred thirty-seven thousand, five hundred forty-three".