131623563 has 8 divisors (see below), whose sum is σ = 177970176. Its totient is φ = 86513000.

The previous prime is 131623561. The next prime is 131623601. The reversal of 131623563 is 365326131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131623563 - 2¹ = 131623561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131623563.

It is not an unprimeable number, because it can be changed into a prime (131623561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308763 + ... + 309188.

It is an arithmetic number, because the mean of its divisors is an integer number (22246272).

Almost surely, 2^131623563 is an apocalyptic number.

131623563 is a deficient number, since it is larger than the sum of its proper divisors (46346613).

131623563 is an equidigital number, since it uses as much as digits as its factorization.

131623563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618025.

The product of its digits is 9720, while the sum is 30.

The square root of 131623563 is about 11472.7312789937. The cubic root of 131623563 is about 508.6798652884.

Adding to 131623563 its reverse (365326131), we get a palindrome (496949694).

The spelling of 131623563 in words is "one hundred thirty-one million, six hundred twenty-three thousand, five hundred sixty-three".