30681434 has 16 divisors (see below), whose sum is σ = 53109888. Its totient is φ = 13020912.

The previous prime is 30681419. The next prime is 30681437. The reversal of 30681434 is 43418603.

It is a junction number, because it is equal to n+sod(n) for n = 30681397 and 30681406.

It is not an unprimeable number, because it can be changed into a prime (30681437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9197 + ... + 12080.

It is an arithmetic number, because the mean of its divisors is an integer number (3319368).

Almost surely, 2^30681434 is an apocalyptic number.

30681434 is a deficient number, since it is larger than the sum of its proper divisors (22428454).

30681434 is a wasteful number, since it uses less digits than its factorization.

30681434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21389.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 30681434 is about 5539.0824149854. The cubic root of 30681434 is about 313.0582967014.

The spelling of 30681434 in words is "thirty million, six hundred eighty-one thousand, four hundred thirty-four".