131958971 has 16 divisors (see below), whose sum is σ = 144399360. Its totient is φ = 120126240.

The previous prime is 131958949. The next prime is 131958973. The reversal of 131958971 is 179859131.

It is not a de Polignac number, because 131958971 - 2⁶ = 131958907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131958973) 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 15 ways as a sum of consecutive naturals, for example, 91760 + ... + 93186.

It is an arithmetic number, because the mean of its divisors is an integer number (9024960).

Almost surely, 2^131958971 is an apocalyptic number.

131958971 is a deficient number, since it is larger than the sum of its proper divisors (12440389).

131958971 is a wasteful number, since it uses less digits than its factorization.

131958971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634.

The product of its digits is 68040, while the sum is 44.

The square root of 131958971 is about 11487.3395962686. The cubic root of 131958971 is about 509.1115777023. Note that the first 3 decimals are identical.

The spelling of 131958971 in words is "one hundred thirty-one million, nine hundred fifty-eight thousand, nine hundred seventy-one".