131025563 has 4 divisors (see below), whose sum is σ = 132376440. Its totient is φ = 129674688.

The previous prime is 131025553. The next prime is 131025581. The reversal of 131025563 is 365520131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365520131 = 83 ⋅4403857.

It is a cyclic number.

It is not a de Polignac number, because 131025563 - 2²² = 126831259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131025553) 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, 675293 + ... + 675486.

It is an arithmetic number, because the mean of its divisors is an integer number (33094110).

Almost surely, 2^131025563 is an apocalyptic number.

131025563 is a deficient number, since it is larger than the sum of its proper divisors (1350877).

131025563 is an equidigital number, since it uses as much as digits as its factorization.

131025563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350876.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 131025563 is about 11446.6398126262. The cubic root of 131025563 is about 507.9083408212.

Adding to 131025563 its reverse (365520131), we get a palindrome (496545694).

The spelling of 131025563 in words is "one hundred thirty-one million, twenty-five thousand, five hundred sixty-three".