131872587 has 32 divisors (see below), whose sum is σ = 232118784. Its totient is φ = 64473600.

The previous prime is 131872579. The next prime is 131872603. The reversal of 131872587 is 785278131.

It is not a de Polignac number, because 131872587 - 2³ = 131872579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131872387) 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, 12864 + ... + 20717.

It is an arithmetic number, because the mean of its divisors is an integer number (7253712).

Almost surely, 2^131872587 is an apocalyptic number.

131872587 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

131872587 is a deficient number, since it is larger than the sum of its proper divisors (100246197).

131872587 is a wasteful number, since it uses less digits than its factorization.

131872587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33619.

The product of its digits is 94080, while the sum is 42.

The square root of 131872587 is about 11483.5790152722. The cubic root of 131872587 is about 509.0004606020. Note that the first 3 decimals are identical.

The spelling of 131872587 in words is "one hundred thirty-one million, eight hundred seventy-two thousand, five hundred eighty-seven".