135306320 has 40 divisors (see below), whose sum is σ = 324741120. Its totient is φ = 52375680.

The previous prime is 135306307. The next prime is 135306323. The reversal of 135306320 is 23603531.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135306323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24800 + ... + 29759.

It is an arithmetic number, because the mean of its divisors is an integer number (8118528).

Almost surely, 2^135306320 is an apocalyptic number.

135306320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135306320 is an abundant number, since it is smaller than the sum of its proper divisors (189434800).

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

135306320 is a wasteful number, since it uses less digits than its factorization.

135306320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54603 (or 54597 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 135306320 is about 11632.1244835155. The cubic root of 135306320 is about 513.3804907859.

Adding to 135306320 its reverse (23603531), we get a palindrome (158909851).

The spelling of 135306320 in words is "one hundred thirty-five million, three hundred six thousand, three hundred twenty".