131973996 has 96 divisors (see below), whose sum is σ = 386201088. Its totient is φ = 34076160.

The previous prime is 131973991. The next prime is 131973997. The reversal of 131973996 is 699379131.

It is not an unprimeable number, because it can be changed into a prime (131973991) 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 31 ways as a sum of consecutive naturals, for example, 214986 + ... + 215598.

It is an arithmetic number, because the mean of its divisors is an integer number (4022928).

Almost surely, 2^131973996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131973996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193100544).

131973996 is an abundant number, since it is smaller than the sum of its proper divisors (254227092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131973996 is a wasteful number, since it uses less digits than its factorization.

131973996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 869 counting only the distinct ones).

The product of its digits is 275562, while the sum is 48.

The square root of 131973996 is about 11487.9935584940. The cubic root of 131973996 is about 509.1308996453.

The spelling of 131973996 in words is "one hundred thirty-one million, nine hundred seventy-three thousand, nine hundred ninety-six".