131427447 has 4 divisors (see below), whose sum is σ = 175236600. Its totient is φ = 87618296.

The previous prime is 131427437. The next prime is 131427473. The reversal of 131427447 is 744724131.

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 131427447 - 2⁴ = 131427431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131427437) 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, 21904572 + ... + 21904577.

It is an arithmetic number, because the mean of its divisors is an integer number (43809150).

Almost surely, 2^131427447 is an apocalyptic number.

131427447 is a deficient number, since it is larger than the sum of its proper divisors (43809153).

131427447 is an equidigital number, since it uses as much as digits as its factorization.

131427447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43809152.

The product of its digits is 18816, while the sum is 33.

The square root of 131427447 is about 11464.1810435809. The cubic root of 131427447 is about 508.4270993802.

The spelling of 131427447 in words is "one hundred thirty-one million, four hundred twenty-seven thousand, four hundred forty-seven".