30812134 has 12 divisors (see below), whose sum is σ = 48316716. Its totient is φ = 14735732.

The previous prime is 30812113. The next prime is 30812189. The reversal of 30812134 is 43121803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13504 + ... + 15619.

It is an arithmetic number, because the mean of its divisors is an integer number (4026393).

Almost surely, 2^30812134 is an apocalyptic number.

30812134 is a deficient number, since it is larger than the sum of its proper divisors (17504582).

30812134 is a wasteful number, since it uses less digits than its factorization.

30812134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29171 (or 29148 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 30812134 is about 5550.8678600738. The cubic root of 30812134 is about 313.5021998562.

Adding to 30812134 its reverse (43121803), we get a palindrome (73933937).

The spelling of 30812134 in words is "thirty million, eight hundred twelve thousand, one hundred thirty-four".