30621241 has 4 divisors (see below), whose sum is σ = 34995712. Its totient is φ = 26246772.

The previous prime is 30621223. The next prime is 30621263. The reversal of 30621241 is 14212603.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14212603 = 2969 ⋅4787.

It is a cyclic number.

It is not a de Polignac number, because 30621241 - 2⁵ = 30621209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30621221) 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, 2187225 + ... + 2187238.

It is an arithmetic number, because the mean of its divisors is an integer number (8748928).

Almost surely, 2^30621241 is an apocalyptic number.

It is an amenable number.

30621241 is a deficient number, since it is larger than the sum of its proper divisors (4374471).

30621241 is an equidigital number, since it uses as much as digits as its factorization.

30621241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374470.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30621241 is about 5533.6462662516. The cubic root of 30621241 is about 312.8534360614.

Adding to 30621241 its reverse (14212603), we get a palindrome (44833844).

The spelling of 30621241 in words is "thirty million, six hundred twenty-one thousand, two hundred forty-one".