30000000257 has 4 divisors (see below), whose sum is σ = 30046657200. Its totient is φ = 29953343316.

The previous prime is 30000000253. The next prime is 30000000287. The reversal of 30000000257 is 75200000003.

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 30000000257 - 2² = 30000000253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30000000253) 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, 23327507 + ... + 23328792.

It is an arithmetic number, because the mean of its divisors is an integer number (7511664300).

Almost surely, 2^30000000257 is an apocalyptic number.

It is an amenable number.

30000000257 is a deficient number, since it is larger than the sum of its proper divisors (46656943).

30000000257 is an equidigital number, since it uses as much as digits as its factorization.

30000000257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46656942.

The product of its (nonzero) digits is 210, while the sum is 17.

The spelling of 30000000257 in words is "thirty billion, two hundred fifty-seven", and thus it is an aban number.