30645214321 has 4 divisors (see below), whose sum is σ = 30645576000. Its totient is φ = 30644852644.

The previous prime is 30645214307. The next prime is 30645214349. The reversal of 30645214321 is 12341254603.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 30645214321 - 2²⁵ = 30611659889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30645212321) 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 3 ways as a sum of consecutive naturals, for example, 22380 + ... + 248578.

It is an arithmetic number, because the mean of its divisors is an integer number (7661394000).

Almost surely, 2^30645214321 is an apocalyptic number.

It is an amenable number.

30645214321 is a deficient number, since it is larger than the sum of its proper divisors (361679).

30645214321 is a wasteful number, since it uses less digits than its factorization.

30645214321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361678.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 30645214321 its reverse (12341254603), we get a palindrome (42986468924).

The spelling of 30645214321 in words is "thirty billion, six hundred forty-five million, two hundred fourteen thousand, three hundred twenty-one".