30541021 has 12 divisors (see below), whose sum is σ = 35884128. Its totient is φ = 25462512.

The previous prime is 30541013. The next prime is 30541067. The reversal of 30541021 is 12014503.

It is not a de Polignac number, because 30541021 - 2³ = 30541013 is a prime.

It is a pancake number, because a pancake can be divided into 30541021 parts by 7815 straight cuts.

It is a junction number, because it is equal to n+sod(n) for n = 30540986 and 30541004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30541001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7990 + ... + 11176.

It is an arithmetic number, because the mean of its divisors is an integer number (2990344).

Almost surely, 2^30541021 is an apocalyptic number.

It is an amenable number.

30541021 is a deficient number, since it is larger than the sum of its proper divisors (5343107).

30541021 is an equidigital number, since it uses as much as digits as its factorization.

30541021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3268 (or 3231 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 30541021 is about 5526.3931275290. The cubic root of 30541021 is about 312.5799978660.

Adding to 30541021 its reverse (12014503), we get a palindrome (42555524).

The spelling of 30541021 in words is "thirty million, five hundred forty-one thousand, twenty-one".