30421020023 has 4 divisors (see below), whose sum is σ = 32022126360. Its totient is φ = 28819913688.

The previous prime is 30421020013. The next prime is 30421020079. The reversal of 30421020023 is 32002012403.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30421020023 - 2¹² = 30421015927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30421019983 and 30421020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30421020013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800553140 + ... + 800553177.

It is an arithmetic number, because the mean of its divisors is an integer number (8005531590).

Almost surely, 2^30421020023 is an apocalyptic number.

30421020023 is a deficient number, since it is larger than the sum of its proper divisors (1601106337).

30421020023 is a wasteful number, since it uses less digits than its factorization.

30421020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601106336.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 30421020023 its reverse (32002012403), we get a palindrome (62423032426).

The spelling of 30421020023 in words is "thirty billion, four hundred twenty-one million, twenty thousand, twenty-three".