131895887 has 4 divisors (see below), whose sum is σ = 132294696. Its totient is φ = 131497080.

The previous prime is 131895817. The next prime is 131895923. The reversal of 131895887 is 788598131.

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 131895887 - 2²² = 127701583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131895817) 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, 198908 + ... + 199569.

It is an arithmetic number, because the mean of its divisors is an integer number (33073674).

Almost surely, 2^131895887 is an apocalyptic number.

131895887 is a deficient number, since it is larger than the sum of its proper divisors (398809).

131895887 is an equidigital number, since it uses as much as digits as its factorization.

131895887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398808.

The product of its digits is 483840, while the sum is 50.

The square root of 131895887 is about 11484.5934625480. The cubic root of 131895887 is about 509.0304365371.

The spelling of 131895887 in words is "one hundred thirty-one million, eight hundred ninety-five thousand, eight hundred eighty-seven".