131543873 has 2 divisors, whose sum is σ = 131543874. Its totient is φ = 131543872.

The previous prime is 131543849. The next prime is 131543887. The reversal of 131543873 is 378345131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111365809 + 20178064 = 10553^2 + 4492^2 .

It is a cyclic number.

It is not a de Polignac number, because 131543873 - 2⁶ = 131543809 is a prime.

It is not a weakly prime, because it can be changed into another prime (131543803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65771936 + 65771937.

It is an arithmetic number, because the mean of its divisors is an integer number (65771937).

Almost surely, 2^131543873 is an apocalyptic number.

It is an amenable number.

131543873 is a deficient number, since it is larger than the sum of its proper divisors (1).

131543873 is an equidigital number, since it uses as much as digits as its factorization.

131543873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 131543873 is about 11469.2577353550. The cubic root of 131543873 is about 508.5771864034.

The spelling of 131543873 in words is "one hundred thirty-one million, five hundred forty-three thousand, eight hundred seventy-three".