30312135 has 72 divisors (see below), whose sum is σ = 62421840. Its totient is φ = 13563648.

The previous prime is 30312127. The next prime is 30312151. The reversal of 30312135 is 53121303.

It is not a de Polignac number, because 30312135 - 2³ = 30312127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 129979 + ... + 130211.

It is an arithmetic number, because the mean of its divisors is an integer number (866970).

Almost surely, 2^30312135 is an apocalyptic number.

30312135 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30312135 is an abundant number, since it is smaller than the sum of its proper divisors (32109705).

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

30312135 is a wasteful number, since it uses less digits than its factorization.

30312135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 30312135 is about 5505.6457386941. The cubic root of 30312135 is about 311.7971746352.

Adding to 30312135 its reverse (53121303), we get a palindrome (83433438).

The spelling of 30312135 in words is "thirty million, three hundred twelve thousand, one hundred thirty-five".