131975100 has 54 divisors (see below), whose sum is σ = 413671440. Its totient is φ = 35193120.

The previous prime is 131975093. The next prime is 131975101. The reversal of 131975100 is 1579131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131975101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 72420 + ... + 74219.

Almost surely, 2^131975100 is an apocalyptic number.

131975100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131975100 is an abundant number, since it is smaller than the sum of its proper divisors (281696340).

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

131975100 is a wasteful number, since it uses less digits than its factorization.

131975100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146659 (or 146649 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 131975100 is about 11488.0416085597. The cubic root of 131975100 is about 509.1323193163.

The spelling of 131975100 in words is "one hundred thirty-one million, nine hundred seventy-five thousand, one hundred".