131547197 has 4 divisors (see below), whose sum is σ = 133510656. Its totient is φ = 129583740.

The previous prime is 131547179. The next prime is 131547217. The reversal of 131547197 is 791745131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131547197 - 2⁶ = 131547133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131547197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131547107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981629 + ... + 981762.

It is an arithmetic number, because the mean of its divisors is an integer number (33377664).

Almost surely, 2^131547197 is an apocalyptic number.

It is an amenable number.

131547197 is a deficient number, since it is larger than the sum of its proper divisors (1963459).

131547197 is an equidigital number, since it uses as much as digits as its factorization.

131547197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963458.

The product of its digits is 26460, while the sum is 38.

The square root of 131547197 is about 11469.4026435556. The cubic root of 131547197 is about 508.5814701360.

The spelling of 131547197 in words is "one hundred thirty-one million, five hundred forty-seven thousand, one hundred ninety-seven".