306423506021 has 8 divisors (see below), whose sum is σ = 313561046304. Its totient is φ = 299286484560.

The previous prime is 306423505979. The next prime is 306423506027. The reversal of 306423506021 is 120605324603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 306423506021 - 2¹⁰ = 306423504997 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 (306423506027) 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 7 ways as a sum of consecutive naturals, for example, 1229126 + ... + 1457256.

It is an arithmetic number, because the mean of its divisors is an integer number (39195130788).

Almost surely, 2^306423506021 is an apocalyptic number.

It is an amenable number.

306423506021 is a deficient number, since it is larger than the sum of its proper divisors (7137540283).

306423506021 is a wasteful number, since it uses less digits than its factorization.

306423506021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259411.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 306423506021 in words is "three hundred six billion, four hundred twenty-three million, five hundred six thousand, twenty-one".