131849971 has 4 divisors (see below), whose sum is σ = 143836344. Its totient is φ = 119863600.

The previous prime is 131849969. The next prime is 131850023. The reversal of 131849971 is 179948131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131849971 - 2¹ = 131849969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131849171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5993170 + ... + 5993191.

It is an arithmetic number, because the mean of its divisors is an integer number (35959086).

Almost surely, 2^131849971 is an apocalyptic number.

131849971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131849971 is a deficient number, since it is larger than the sum of its proper divisors (11986373).

131849971 is a wasteful number, since it uses less digits than its factorization.

131849971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11986372.

The product of its digits is 54432, while the sum is 43.

The square root of 131849971 is about 11482.5942626220. The cubic root of 131849971 is about 508.9713612700.

The spelling of 131849971 in words is "one hundred thirty-one million, eight hundred forty-nine thousand, nine hundred seventy-one".