131543903 has 2 divisors, whose sum is σ = 131543904. Its totient is φ = 131543902.

The previous prime is 131543899. The next prime is 131543947. The reversal of 131543903 is 309345131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131543903 - 2² = 131543899 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131543953) 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 as a sum of consecutive naturals, namely, 65771951 + 65771952.

It is an arithmetic number, because the mean of its divisors is an integer number (65771952).

Almost surely, 2^131543903 is an apocalyptic number.

131543903 is a deficient number, since it is larger than the sum of its proper divisors (1).

131543903 is an equidigital number, since it uses as much as digits as its factorization.

131543903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 131543903 is about 11469.2590431989. The cubic root of 131543903 is about 508.5772250656.

The spelling of 131543903 in words is "one hundred thirty-one million, five hundred forty-three thousand, nine hundred three".