135531140 has 24 divisors (see below), whose sum is σ = 301358232. Its totient is φ = 51023360.

The previous prime is 135531133. The next prime is 135531167. The reversal of 135531140 is 41135531.

It can be written as a sum of positive squares in 4 ways, for example, as 28987456 + 106543684 = 5384^2 + 10322^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198971 + ... + 199650.

It is an arithmetic number, because the mean of its divisors is an integer number (12556593).

Almost surely, 2^135531140 is an apocalyptic number.

135531140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135531140 is an abundant number, since it is smaller than the sum of its proper divisors (165827092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135531140 is a wasteful number, since it uses less digits than its factorization.

135531140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398647 (or 398645 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 135531140 is about 11641.7842275143. The cubic root of 135531140 is about 513.6646714903.

Adding to 135531140 its reverse (41135531), we get a palindrome (176666671).

The spelling of 135531140 in words is "one hundred thirty-five million, five hundred thirty-one thousand, one hundred forty".