131578583 has 4 divisors (see below), whose sum is σ = 131958120. Its totient is φ = 131199048.

The previous prime is 131578571. The next prime is 131578609. The reversal of 131578583 is 385875131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131578583 - 2⁶ = 131578519 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 131578583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131578523) 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, 189248 + ... + 189941.

It is an arithmetic number, because the mean of its divisors is an integer number (32989530).

Almost surely, 2^131578583 is an apocalyptic number.

131578583 is a deficient number, since it is larger than the sum of its proper divisors (379537).

131578583 is an equidigital number, since it uses as much as digits as its factorization.

131578583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379536.

The product of its digits is 100800, while the sum is 41.

The square root of 131578583 is about 11470.7708110658. The cubic root of 131578583 is about 508.6219146027.

The spelling of 131578583 in words is "one hundred thirty-one million, five hundred seventy-eight thousand, five hundred eighty-three".