30323716621 has 4 divisors (see below), whose sum is σ = 33080418144. Its totient is φ = 27567015100.

The previous prime is 30323716609. The next prime is 30323716639. The reversal of 30323716621 is 12661732303.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30323716621 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 (30323716421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1378350745 + ... + 1378350766.

It is an arithmetic number, because the mean of its divisors is an integer number (8270104536).

Almost surely, 2^30323716621 is an apocalyptic number.

It is an amenable number.

30323716621 is a deficient number, since it is larger than the sum of its proper divisors (2756701523).

30323716621 is a wasteful number, since it uses less digits than its factorization.

30323716621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756701522.

The product of its (nonzero) digits is 27216, while the sum is 34.

The spelling of 30323716621 in words is "thirty billion, three hundred twenty-three million, seven hundred sixteen thousand, six hundred twenty-one".