131274887 has 4 divisors (see below), whose sum is σ = 131303640. Its totient is φ = 131246136.

The previous prime is 131274883. The next prime is 131274889. The reversal of 131274887 is 788472131.

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 131274887 - 2² = 131274883 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 (131274883) 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, 5837 + ... + 17222.

It is an arithmetic number, because the mean of its divisors is an integer number (32825910).

Almost surely, 2^131274887 is an apocalyptic number.

131274887 is a deficient number, since it is larger than the sum of its proper divisors (28753).

131274887 is an equidigital number, since it uses as much as digits as its factorization.

131274887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28752.

The product of its digits is 75264, while the sum is 41.

The square root of 131274887 is about 11457.5253436333. The cubic root of 131274887 is about 508.2302970836.

The spelling of 131274887 in words is "one hundred thirty-one million, two hundred seventy-four thousand, eight hundred eighty-seven".