131245563 has 16 divisors (see below), whose sum is σ = 178780160. Its totient is φ = 85621536.

The previous prime is 131245547. The next prime is 131245577. The reversal of 131245563 is 365542131.

It is not a de Polignac number, because 131245563 - 2⁴ = 131245547 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 131245563.

It is not an unprimeable number, because it can be changed into a prime (131245523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29478 + ... + 33636.

It is an arithmetic number, because the mean of its divisors is an integer number (11173760).

Almost surely, 2^131245563 is an apocalyptic number.

131245563 is a deficient number, since it is larger than the sum of its proper divisors (47534597).

131245563 is a wasteful number, since it uses less digits than its factorization.

131245563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4386.

The product of its digits is 10800, while the sum is 30.

The square root of 131245563 is about 11456.2455891972. The cubic root of 131245563 is about 508.1924516754.

Adding to 131245563 its reverse (365542131), we get a palindrome (496787694).

The spelling of 131245563 in words is "one hundred thirty-one million, two hundred forty-five thousand, five hundred sixty-three".