30434681 has 4 divisors (see below), whose sum is σ = 31757952. Its totient is φ = 29111412.

The previous prime is 30434639. The next prime is 30434699. The reversal of 30434681 is 18643403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30434681 - 2⁶ = 30434617 is a prime.

It is a super-2 number, since 2×30434681² = 1852539615143522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30434611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661601 + ... + 661646.

It is an arithmetic number, because the mean of its divisors is an integer number (7939488).

Almost surely, 2^30434681 is an apocalyptic number.

It is an amenable number.

30434681 is a deficient number, since it is larger than the sum of its proper divisors (1323271).

30434681 is a wasteful number, since it uses less digits than its factorization.

30434681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323270.

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

The square root of 30434681 is about 5516.7636345959. The cubic root of 30434681 is about 312.2167878884.

The spelling of 30434681 in words is "thirty million, four hundred thirty-four thousand, six hundred eighty-one".