30641421 has 4 divisors (see below), whose sum is σ = 40855232. Its totient is φ = 20427612.

The previous prime is 30641407. The next prime is 30641437. The reversal of 30641421 is 12414603.

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 not a de Polignac number, because 30641421 - 2¹⁰ = 30640397 is a prime.

It is a super-4 number, since 4×30641421⁴ (a number of 31 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30641441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5106901 + ... + 5106906.

It is an arithmetic number, because the mean of its divisors is an integer number (10213808).

Almost surely, 2^30641421 is an apocalyptic number.

It is an amenable number.

30641421 is a deficient number, since it is larger than the sum of its proper divisors (10213811).

30641421 is a wasteful number, since it uses less digits than its factorization.

30641421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10213810.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 30641421 is about 5535.4693567935. The cubic root of 30641421 is about 312.9221464920.

The spelling of 30641421 in words is "thirty million, six hundred forty-one thousand, four hundred twenty-one".