30905135 has 4 divisors (see below), whose sum is σ = 37086168. Its totient is φ = 24724104.

The previous prime is 30905129. The next prime is 30905143. The reversal of 30905135 is 53150903.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30905135 - 2¹⁴ = 30888751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3090509 + ... + 3090518.

It is an arithmetic number, because the mean of its divisors is an integer number (9271542).

Almost surely, 2^30905135 is an apocalyptic number.

30905135 is a deficient number, since it is larger than the sum of its proper divisors (6181033).

30905135 is an equidigital number, since it uses as much as digits as its factorization.

30905135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6181032.

The product of its (nonzero) digits is 2025, while the sum is 26.

The square root of 30905135 is about 5559.2387068735. The cubic root of 30905135 is about 313.8173001029.

The spelling of 30905135 in words is "thirty million, nine hundred five thousand, one hundred thirty-five".