131522 has 4 divisors (see below), whose sum is σ = 197286. Its totient is φ = 65760.

The previous prime is 131519. The next prime is 131543. The reversal of 131522 is 225131.

It is a happy number.

131522 is nontrivially palindromic in base 15.

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

It can be written as a sum of positive squares in only one way, i.e., 73441 + 58081 = 271^2 + 241^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131497 and 131506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32879 + ... + 32882.

2¹³¹⁵²² is an apocalyptic number.

131522 is a deficient number, since it is larger than the sum of its proper divisors (65764).

131522 is an equidigital number, since it uses as much as digits as its factorization.

131522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65763.

The product of its digits is 60, while the sum is 14.

The square root of 131522 is about 362.6596200296. The cubic root of 131522 is about 50.8548996251.

Adding to 131522 its reverse (225131), we get a palindrome (356653).

The spelling of 131522 in words is "one hundred thirty-one thousand, five hundred twenty-two".