136531322 has 4 divisors (see below), whose sum is σ = 204796986. Its totient is φ = 68265660.

The previous prime is 136531319. The next prime is 136531337. The reversal of 136531322 is 223135631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223135631 = 2897 ⋅77023.

It can be written as a sum of positive squares in only one way, i.e., 110019121 + 26512201 = 10489^2 + 5149^2 .

It is a junction number, because it is equal to n+sod(n) for n = 136531291 and 136531300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34132829 + ... + 34132832.

Almost surely, 2^136531322 is an apocalyptic number.

136531322 is a deficient number, since it is larger than the sum of its proper divisors (68265664).

136531322 is an equidigital number, since it uses as much as digits as its factorization.

136531322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68265663.

The product of its digits is 3240, while the sum is 26.

The square root of 136531322 is about 11684.6618265143. The cubic root of 136531322 is about 514.9251432343.

Adding to 136531322 its reverse (223135631), we get a palindrome (359666953).

The spelling of 136531322 in words is "one hundred thirty-six million, five hundred thirty-one thousand, three hundred twenty-two".