131986845 has 24 divisors (see below), whose sum is σ = 229537152. Its totient is φ = 70159200.

The previous prime is 131986837. The next prime is 131986853. The reversal of 131986845 is 548689131.

It is an interprime number because it is at equal distance from previous prime (131986837) and next prime (131986853).

It is not a de Polignac number, because 131986845 - 2³ = 131986837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 131986845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9280 + ... + 18710.

It is an arithmetic number, because the mean of its divisors is an integer number (9564048).

Almost surely, 2^131986845 is an apocalyptic number.

131986845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131986845 is a deficient number, since it is larger than the sum of its proper divisors (97550307).

131986845 is a wasteful number, since it uses less digits than its factorization.

131986845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9753 (or 9750 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 131986845 is about 11488.5527809207. The cubic root of 131986845 is about 509.1474221190.

It can be divided in two parts, 13198684 and 5, that added together give a square (13198689 = 3633²).

The spelling of 131986845 in words is "one hundred thirty-one million, nine hundred eighty-six thousand, eight hundred forty-five".