131570191 has 8 divisors (see below), whose sum is σ = 140091120. Its totient is φ = 123136128.

The previous prime is 131570161. The next prime is 131570203. The reversal of 131570191 is 191075131.

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

It is a cyclic number.

It is not a de Polignac number, because 131570191 - 2⁷ = 131570063 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 (131570141) 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, 18576 + ... + 24661.

It is an arithmetic number, because the mean of its divisors is an integer number (17511390).

Almost surely, 2^131570191 is an apocalyptic number.

131570191 is a deficient number, since it is larger than the sum of its proper divisors (8520929).

131570191 is a wasteful number, since it uses less digits than its factorization.

131570191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43433.

The product of its (nonzero) digits is 945, while the sum is 28.

The square root of 131570191 is about 11470.4050059272. The cubic root of 131570191 is about 508.6111011766.

The spelling of 131570191 in words is "one hundred thirty-one million, five hundred seventy thousand, one hundred ninety-one".