204302120003123 has 16 divisors (see below), whose sum is σ = 217208245006080. Its totient is φ = 191731316640864.

The previous prime is 204302120003041. The next prime is 204302120003143. The reversal of 204302120003123 is 321300021203402.

It is a cyclic number.

It is not a de Polignac number, because 204302120003123 - 2³⁶ = 204233400526387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204302120003143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441557540 + ... + 442019982.

It is an arithmetic number, because the mean of its divisors is an integer number (13575515312880).

Almost surely, 2^{204302120003123} is an apocalyptic number.

204302120003123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

204302120003123 is a deficient number, since it is larger than the sum of its proper divisors (12906125002957).

204302120003123 is a wasteful number, since it uses less digits than its factorization.

204302120003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824938.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 204302120003123 its reverse (321300021203402), we get a palindrome (525602141206525).

The spelling of 204302120003123 in words is "two hundred four trillion, three hundred two billion, one hundred twenty million, three thousand, one hundred twenty-three".