131654647 has 4 divisors (see below), whose sum is σ = 139399056. Its totient is φ = 123910240.

The previous prime is 131654641. The next prime is 131654687. The reversal of 131654647 is 746456131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746456131 = 227 ⋅3288353.

It is a cyclic number.

It is not a de Polignac number, because 131654647 - 2¹⁹ = 131130359 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 (131654641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3872179 + ... + 3872212.

It is an arithmetic number, because the mean of its divisors is an integer number (34849764).

Almost surely, 2^131654647 is an apocalyptic number.

131654647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

131654647 is a deficient number, since it is larger than the sum of its proper divisors (7744409).

131654647 is an equidigital number, since it uses as much as digits as its factorization.

131654647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7744408.

The product of its digits is 60480, while the sum is 37.

The square root of 131654647 is about 11474.0858895164. The cubic root of 131654647 is about 508.7199051314.

The spelling of 131654647 in words is "one hundred thirty-one million, six hundred fifty-four thousand, six hundred forty-seven".