131406447 has 8 divisors (see below), whose sum is σ = 185515056. Its totient is φ = 82451072.

The previous prime is 131406439. The next prime is 131406449. The reversal of 131406447 is 744604131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131406447 - 2³ = 131406439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131406449) 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 7 ways as a sum of consecutive naturals, for example, 1288248 + ... + 1288349.

It is an arithmetic number, because the mean of its divisors is an integer number (23189382).

Almost surely, 2^131406447 is an apocalyptic number.

131406447 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

131406447 is a deficient number, since it is larger than the sum of its proper divisors (54108609).

131406447 is a wasteful number, since it uses less digits than its factorization.

131406447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576617.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 131406447 is about 11463.2651107789. The cubic root of 131406447 is about 508.4000184367.

The spelling of 131406447 in words is "one hundred thirty-one million, four hundred six thousand, four hundred forty-seven".