30081135 has 16 divisors (see below), whose sum is σ = 55005696. Its totient is φ = 13751328.

The previous prime is 30081131. The next prime is 30081179. The reversal of 30081135 is 53118003.

It is a happy number.

It is not a de Polignac number, because 30081135 - 2² = 30081131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30081131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143139 + ... + 143348.

It is an arithmetic number, because the mean of its divisors is an integer number (3437856).

Almost surely, 2^30081135 is an apocalyptic number.

30081135 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30081135 is a deficient number, since it is larger than the sum of its proper divisors (24924561).

30081135 is a wasteful number, since it uses less digits than its factorization.

30081135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286502.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 30081135 is about 5484.6271523231. The cubic root of 30081135 is about 311.0031154590.

Adding to 30081135 its reverse (53118003), we get a palindrome (83199138).

The spelling of 30081135 in words is "thirty million, eighty-one thousand, one hundred thirty-five".