131782747 has 4 divisors (see below), whose sum is σ = 132949080. Its totient is φ = 130616416.

The previous prime is 131782711. The next prime is 131782771. The reversal of 131782747 is 747287131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747287131 = 619 ⋅1207249.

It is a cyclic number.

It is not a de Polignac number, because 131782747 - 2¹⁹ = 131258459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131782787) 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 3 ways as a sum of consecutive naturals, for example, 582997 + ... + 583222.

It is an arithmetic number, because the mean of its divisors is an integer number (33237270).

Almost surely, 2^131782747 is an apocalyptic number.

131782747 is a deficient number, since it is larger than the sum of its proper divisors (1166333).

131782747 is a wasteful number, since it uses less digits than its factorization.

131782747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166332.

The product of its digits is 65856, while the sum is 40.

The square root of 131782747 is about 11479.6666763456. Note that the first 4 decimals coincide. The cubic root of 131782747 is about 508.8848465062.

The spelling of 131782747 in words is "one hundred thirty-one million, seven hundred eighty-two thousand, seven hundred forty-seven".