135531412 has 12 divisors (see below), whose sum is σ = 251131860. Its totient is φ = 63779456.

The previous prime is 135531379. The next prime is 135531439. The reversal of 135531412 is 214135531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 112911876 + 22619536 = 10626^2 + 4756^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996487 + ... + 996622.

It is an arithmetic number, because the mean of its divisors is an integer number (20927655).

Almost surely, 2^135531412 is an apocalyptic number.

It is an amenable number.

135531412 is a deficient number, since it is larger than the sum of its proper divisors (115600448).

135531412 is a wasteful number, since it uses less digits than its factorization.

135531412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993130 (or 1993128 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 135531412 is about 11641.7959095665. The cubic root of 135531412 is about 513.6650151179.

Adding to 135531412 its reverse (214135531), we get a palindrome (349666943).

The spelling of 135531412 in words is "one hundred thirty-five million, five hundred thirty-one thousand, four hundred twelve".