131197390 has 16 divisors (see below), whose sum is σ = 239681232. Its totient is φ = 51695424.

The previous prime is 131197387. The next prime is 131197399. The reversal of 131197390 is 93791131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131197399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97239 + ... + 98578.

It is an arithmetic number, because the mean of its divisors is an integer number (14980077).

Almost surely, 2^131197390 is an apocalyptic number.

131197390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131197390 is a deficient number, since it is larger than the sum of its proper divisors (108483842).

131197390 is a wasteful number, since it uses less digits than its factorization.

131197390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195891.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 131197390 is about 11454.1429186125. The cubic root of 131197390 is about 508.1302676029.

The spelling of 131197390 in words is "one hundred thirty-one million, one hundred ninety-seven thousand, three hundred ninety".