30800511 has 12 divisors (see below), whose sum is σ = 50845392. Its totient is φ = 17600256.

The previous prime is 30800491. The next prime is 30800531. The reversal of 30800511 is 11500803.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30800491) and next prime (30800531).

It is not a de Polignac number, because 30800511 - 2⁵ = 30800479 is a prime.

It is a super-2 number, since 2×30800511² = 1897342955722242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30800531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244386 + ... + 244511.

It is an arithmetic number, because the mean of its divisors is an integer number (4237116).

Almost surely, 2^30800511 is an apocalyptic number.

30800511 is a deficient number, since it is larger than the sum of its proper divisors (20044881).

30800511 is a wasteful number, since it uses less digits than its factorization.

30800511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488910 (or 488907 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 30800511 is about 5549.8208079180. The cubic root of 30800511 is about 313.4627749731.

The spelling of 30800511 in words is "thirty million, eight hundred thousand, five hundred eleven".