131532563 has 4 divisors (see below), whose sum is σ = 131682408. Its totient is φ = 131382720.

The previous prime is 131532539. The next prime is 131532617. The reversal of 131532563 is 365235131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365235131 = 349 ⋅1046519.

It is a cyclic number.

It is not a de Polignac number, because 131532563 - 2¹⁴ = 131516179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131532523) 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, 73598 + ... + 75363.

It is an arithmetic number, because the mean of its divisors is an integer number (32920602).

Almost surely, 2^131532563 is an apocalyptic number.

131532563 is a deficient number, since it is larger than the sum of its proper divisors (149845).

131532563 is an equidigital number, since it uses as much as digits as its factorization.

131532563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149844.

The product of its digits is 8100, while the sum is 29.

The square root of 131532563 is about 11468.7646675656. The cubic root of 131532563 is about 508.5626103468.

Adding to 131532563 its reverse (365235131), we get a palindrome (496767694).

The spelling of 131532563 in words is "one hundred thirty-one million, five hundred thirty-two thousand, five hundred sixty-three".