131877845 has 16 divisors (see below), whose sum is σ = 172869120. Its totient is φ = 95784000.

The previous prime is 131877839. The next prime is 131877847. The reversal of 131877845 is 548778131.

It is not a de Polignac number, because 131877845 - 2²² = 127683541 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131877796 and 131877805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131877847) 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, 66620 + ... + 68570.

It is an arithmetic number, because the mean of its divisors is an integer number (10804320).

Almost surely, 2^131877845 is an apocalyptic number.

It is an amenable number.

131877845 is a deficient number, since it is larger than the sum of its proper divisors (40991275).

131877845 is a wasteful number, since it uses less digits than its factorization.

131877845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196.

The product of its digits is 188160, while the sum is 44.

The square root of 131877845 is about 11483.8079485857. The cubic root of 131877845 is about 509.0072254369.

The spelling of 131877845 in words is "one hundred thirty-one million, eight hundred seventy-seven thousand, eight hundred forty-five".