20103123321 has 32 divisors (see below), whose sum is σ = 31560883200. Its totient is φ = 12624312960.

The previous prime is 20103123307. The next prime is 20103123361. The reversal of 20103123321 is 12332130102.

20103123321 is a `hidden beast` number, since 20 + 1 + 0 + 312 + 332 + 1 = 666.

It is not a de Polignac number, because 20103123321 - 2¹⁰ = 20103122297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20103123294 and 20103123303.

It is not an unprimeable number, because it can be changed into a prime (20103123361) 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 31 ways as a sum of consecutive naturals, for example, 281001 + ... + 345206.

It is an arithmetic number, because the mean of its divisors is an integer number (986277600).

Almost surely, 2^20103123321 is an apocalyptic number.

It is an amenable number.

20103123321 is a deficient number, since it is larger than the sum of its proper divisors (11457759879).

20103123321 is a wasteful number, since it uses less digits than its factorization.

20103123321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626286 (or 626280 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20103123321 its reverse (12332130102), we get a palindrome (32435253423).

The spelling of 20103123321 in words is "twenty billion, one hundred three million, one hundred twenty-three thousand, three hundred twenty-one".