131112647 has 4 divisors (see below), whose sum is σ = 132959376. Its totient is φ = 129265920.

The previous prime is 131112637. The next prime is 131112649. The reversal of 131112647 is 746211131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746211131 = 277 ⋅2693903.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131112647 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 (131112649) 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, 923258 + ... + 923399.

It is an arithmetic number, because the mean of its divisors is an integer number (33239844).

Almost surely, 2^131112647 is an apocalyptic number.

131112647 is a deficient number, since it is larger than the sum of its proper divisors (1846729).

131112647 is an equidigital number, since it uses as much as digits as its factorization.

131112647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846728.

The product of its digits is 1008, while the sum is 26.

The square root of 131112647 is about 11450.4430918633. The cubic root of 131112647 is about 508.0208402284.

Adding to 131112647 its reverse (746211131), we get a palindrome (877323778).

The spelling of 131112647 in words is "one hundred thirty-one million, one hundred twelve thousand, six hundred forty-seven".