131797197 has 12 divisors (see below), whose sum is σ = 217570080. Its totient is φ = 75312648.

The previous prime is 131797189. The next prime is 131797217. The reversal of 131797197 is 791797131.

It is not a de Polignac number, because 131797197 - 2³ = 131797189 is a prime.

It is a super-2 number, since 2×131797197² = 34741002274113618, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131797177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1045947 + ... + 1046072.

It is an arithmetic number, because the mean of its divisors is an integer number (18130840).

Almost surely, 2^131797197 is an apocalyptic number.

It is an amenable number.

131797197 is a deficient number, since it is larger than the sum of its proper divisors (85772883).

131797197 is a wasteful number, since it uses less digits than its factorization.

131797197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092032 (or 2092029 counting only the distinct ones).

The product of its digits is 83349, while the sum is 45.

The square root of 131797197 is about 11480.2960327685. The cubic root of 131797197 is about 508.9034455956.

The spelling of 131797197 in words is "one hundred thirty-one million, seven hundred ninety-seven thousand, one hundred ninety-seven".