131122647 has 12 divisors (see below), whose sum is σ = 189530224. Its totient is φ = 87354720.

The previous prime is 131122643. The next prime is 131122657. The reversal of 131122647 is 746221131.

131122647 is a `hidden beast` number, since 1 + 3 + 1 + 12 + 2 + 647 = 666.

It is not a de Polignac number, because 131122647 - 2² = 131122643 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 131122647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131122643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11622 + ... + 19932.

Almost surely, 2^131122647 is an apocalyptic number.

131122647 is a deficient number, since it is larger than the sum of its proper divisors (58407577).

131122647 is a wasteful number, since it uses less digits than its factorization.

131122647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10070 (or 10067 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 131122647 is about 11450.8797478622. The cubic root of 131122647 is about 508.0337555328.

Adding to 131122647 its reverse (746221131), we get a palindrome (877343778).

It can be divided in two parts, 131122 and 647, that added together give a square (131769 = 363²).

The spelling of 131122647 in words is "one hundred thirty-one million, one hundred twenty-two thousand, six hundred forty-seven".