30801689 has 4 divisors (see below), whose sum is σ = 30837456. Its totient is φ = 30765924.

The previous prime is 30801643. The next prime is 30801703. The reversal of 30801689 is 98610803.

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 30801689 - 2¹² = 30797593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30801989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16559 + ... + 18324.

It is an arithmetic number, because the mean of its divisors is an integer number (7709364).

Almost surely, 2^30801689 is an apocalyptic number.

It is an amenable number.

30801689 is a deficient number, since it is larger than the sum of its proper divisors (35767).

30801689 is an equidigital number, since it uses as much as digits as its factorization.

30801689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35766.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 30801689 is about 5549.9269364560. The cubic root of 30801689 is about 313.4667711670.

The spelling of 30801689 in words is "thirty million, eight hundred one thousand, six hundred eighty-nine".