20310302656423 has 16 divisors (see below), whose sum is σ = 22591171762432. Its totient is φ = 18132776640000.

The previous prime is 20310302656421. The next prime is 20310302656447. The reversal of 20310302656423 is 32465620301302.

It is a cyclic number.

It is not a de Polignac number, because 20310302656423 - 2¹ = 20310302656421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310302656421) 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, 13772178 + ... + 15175423.

It is an arithmetic number, because the mean of its divisors is an integer number (1411948235152).

Almost surely, 2^{20310302656423} is an apocalyptic number.

20310302656423 is a deficient number, since it is larger than the sum of its proper divisors (2280869106009).

20310302656423 is a wasteful number, since it uses less digits than its factorization.

20310302656423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28949386.

The product of its (nonzero) digits is 155520, while the sum is 37.

Adding to 20310302656423 its reverse (32465620301302), we get a palindrome (52775922957725).

The spelling of 20310302656423 in words is "twenty trillion, three hundred ten billion, three hundred two million, six hundred fifty-six thousand, four hundred twenty-three".