131783447 has 8 divisors (see below), whose sum is σ = 133434000. Its totient is φ = 130140864.

The previous prime is 131783423. The next prime is 131783459. The reversal of 131783447 is 744387131.

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 131783447 - 2⁸ = 131783191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131783447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131783417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35579 + ... + 39107.

It is an arithmetic number, because the mean of its divisors is an integer number (16679250).

Almost surely, 2^131783447 is an apocalyptic number.

131783447 is a deficient number, since it is larger than the sum of its proper divisors (1650553).

131783447 is a wasteful number, since it uses less digits than its factorization.

131783447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3985.

The product of its digits is 56448, while the sum is 38.

The square root of 131783447 is about 11479.6971649953. The cubic root of 131783447 is about 508.8857475315.

The spelling of 131783447 in words is "one hundred thirty-one million, seven hundred eighty-three thousand, four hundred forty-seven".