131796197 has 4 divisors (see below), whose sum is σ = 141934380. Its totient is φ = 121658016.

The previous prime is 131796167. The next prime is 131796199. The reversal of 131796197 is 791697131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58967041 + 72829156 = 7679^2 + 8534^2 .

It is a cyclic number.

It is not a de Polignac number, because 131796197 - 2¹⁰ = 131795173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131796199) 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, 5069072 + ... + 5069097.

It is an arithmetic number, because the mean of its divisors is an integer number (35483595).

Almost surely, 2^131796197 is an apocalyptic number.

It is an amenable number.

131796197 is a deficient number, since it is larger than the sum of its proper divisors (10138183).

131796197 is a wasteful number, since it uses less digits than its factorization.

131796197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10138182.

The product of its digits is 71442, while the sum is 44.

The square root of 131796197 is about 11480.2524798020. The cubic root of 131796197 is about 508.9021585052.

The spelling of 131796197 in words is "one hundred thirty-one million, seven hundred ninety-six thousand, one hundred ninety-seven".