30521421023 has 8 divisors (see below), whose sum is σ = 31542539616. Its totient is φ = 29513478400.

The previous prime is 30521421013. The next prime is 30521421041. The reversal of 30521421023 is 32012412503.

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 30521421023 - 2⁸ = 30521420767 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30521421023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30521421013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3289283 + ... + 3298548.

It is an arithmetic number, because the mean of its divisors is an integer number (3942817452).

Almost surely, 2^30521421023 is an apocalyptic number.

30521421023 is a deficient number, since it is larger than the sum of its proper divisors (1021118593).

30521421023 is a wasteful number, since it uses less digits than its factorization.

30521421023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6587985.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 30521421023 its reverse (32012412503), we get a palindrome (62533833526).

The spelling of 30521421023 in words is "thirty billion, five hundred twenty-one million, four hundred twenty-one thousand, twenty-three".