30135911 has 12 divisors (see below), whose sum is σ = 34055568. Its totient is φ = 26604864.

The previous prime is 30135899. The next prime is 30135913. The reversal of 30135911 is 11953103.

It is not a de Polignac number, because 30135911 - 2²² = 25941607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30135913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11 + ... + 7763.

It is an arithmetic number, because the mean of its divisors is an integer number (2837964).

Almost surely, 2^30135911 is an apocalyptic number.

30135911 is a deficient number, since it is larger than the sum of its proper divisors (3919657).

30135911 is a wasteful number, since it uses less digits than its factorization.

30135911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7802 (or 7789 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 30135911 is about 5489.6184749033. The cubic root of 30135911 is about 311.1917738644.

The spelling of 30135911 in words is "thirty million, one hundred thirty-five thousand, nine hundred eleven".