30118901 has 4 divisors (see below), whose sum is σ = 30130572. Its totient is φ = 30107232.

The previous prime is 30118897. The next prime is 30118909. The reversal of 30118901 is 10981103.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10981103 = 7 ⋅1568729.

It can be written as a sum of positive squares in 2 ways, for example, as 14326225 + 15792676 = 3785^2 + 3974^2 .

It is a cyclic number.

It is not a de Polignac number, because 30118901 - 2² = 30118897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30118909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (7532643).

Almost surely, 2^30118901 is an apocalyptic number.

It is an amenable number.

30118901 is a deficient number, since it is larger than the sum of its proper divisors (11671).

30118901 is an equidigital number, since it uses as much as digits as its factorization.

30118901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11670.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 30118901 is about 5488.0689682255. The cubic root of 30118901 is about 311.1332128525.

The spelling of 30118901 in words is "thirty million, one hundred eighteen thousand, nine hundred one".