135331444 has 6 divisors (see below), whose sum is σ = 236830034. Its totient is φ = 67665720.

The previous prime is 135331423. The next prime is 135331451. The reversal of 135331444 is 444133531.

It can be written as a sum of positive squares in only one way, i.e., 88134544 + 47196900 = 9388^2 + 6870^2 .

It is a congruent number.

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, 16916427 + ... + 16916434.

Almost surely, 2^135331444 is an apocalyptic number.

It is an amenable number.

135331444 is a deficient number, since it is larger than the sum of its proper divisors (101498590).

135331444 is a wasteful number, since it uses less digits than its factorization.

135331444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33832865 (or 33832863 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 135331444 is about 11633.2043736883. The cubic root of 135331444 is about 513.4122640571.

Adding to 135331444 its reverse (444133531), we get a palindrome (579464975).

The spelling of 135331444 in words is "one hundred thirty-five million, three hundred thirty-one thousand, four hundred forty-four".