131543601 has 16 divisors (see below), whose sum is σ = 209163264. Its totient is φ = 71899344.

The previous prime is 131543567. The next prime is 131543641. The reversal of 131543601 is 106345131.

It is not a de Polignac number, because 131543601 - 2⁶ = 131543537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131543641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135691 + ... + 136656.

It is an arithmetic number, because the mean of its divisors is an integer number (13072704).

Almost surely, 2^131543601 is an apocalyptic number.

It is an amenable number.

131543601 is a deficient number, since it is larger than the sum of its proper divisors (77619663).

131543601 is a wasteful number, since it uses less digits than its factorization.

131543601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272380.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 131543601 is about 11469.2458775632. The cubic root of 131543601 is about 508.5768358662.

Adding to 131543601 its reverse (106345131), we get a palindrome (237888732).

The spelling of 131543601 in words is "one hundred thirty-one million, five hundred forty-three thousand, six hundred one".