131125563 has 12 divisors (see below), whose sum is σ = 189619560. Its totient is φ = 87317376.

The previous prime is 131125541. The next prime is 131125571. The reversal of 131125563 is 365521131.

It is not a de Polignac number, because 131125563 - 2⁸ = 131125307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131129563) 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, 520 + ... + 16202.

It is an arithmetic number, because the mean of its divisors is an integer number (15801630).

Almost surely, 2^131125563 is an apocalyptic number.

131125563 is a deficient number, since it is larger than the sum of its proper divisors (58493997).

131125563 is a wasteful number, since it uses less digits than its factorization.

131125563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16618 (or 16615 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 131125563 is about 11451.0070736158. The cubic root of 131125563 is about 508.0375215119.

Adding to 131125563 its reverse (365521131), we get a palindrome (496646694).

The spelling of 131125563 in words is "one hundred thirty-one million, one hundred twenty-five thousand, five hundred sixty-three".