131938197 has 8 divisors (see below), whose sum is σ = 181983840. Its totient is φ = 84925680.

The previous prime is 131938171. The next prime is 131938199. The reversal of 131938197 is 791839131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131938197 - 2⁶ = 131938133 is a prime.

It is a super-2 number, since 2×131938197² = 34815375655221618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131938199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758179 + ... + 758352.

It is an arithmetic number, because the mean of its divisors is an integer number (22747980).

Almost surely, 2^131938197 is an apocalyptic number.

It is an amenable number.

131938197 is a deficient number, since it is larger than the sum of its proper divisors (50045643).

131938197 is a wasteful number, since it uses less digits than its factorization.

131938197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516563.

The product of its digits is 40824, while the sum is 42.

The square root of 131938197 is about 11486.4353478353. The cubic root of 131938197 is about 509.0848602085.

The spelling of 131938197 in words is "one hundred thirty-one million, nine hundred thirty-eight thousand, one hundred ninety-seven".