131523 has 8 divisors (see below), whose sum is σ = 200448. Its totient is φ = 75144.

The previous prime is 131519. The next prime is 131543. The reversal of 131523 is 325131.

It is a happy number.

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

It is not a de Polignac number, because 131523 - 2² = 131519 is a prime.

It is a d-powerful number, because it can be written as 1 + 3⁴ + 5³ + 1 + 2¹⁷ + 3⁵ .

It is not an unprimeable number, because it can be changed into a prime (131543) 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, 3111 + ... + 3152.

It is an arithmetic number, because the mean of its divisors is an integer number (25056).

2¹³¹⁵²³ is an apocalyptic number.

131523 is a deficient number, since it is larger than the sum of its proper divisors (68925).

131523 is an equidigital number, since it uses as much as digits as its factorization.

131523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6273.

The product of its digits is 90, while the sum is 15.

The square root of 131523 is about 362.6609987302. The cubic root of 131523 is about 50.8550285130.

Adding to 131523 its reverse (325131), we get a palindrome (456654).

The spelling of 131523 in words is "one hundred thirty-one thousand, five hundred twenty-three".