20310311423 has 4 divisors (see below), whose sum is σ = 20357217888. Its totient is φ = 20263404960.

The previous prime is 20310311387. The next prime is 20310311449. The reversal of 20310311423 is 32411301302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20310311423 - 2²² = 20306117119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20310311395 and 20310311404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310316423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23452583 + ... + 23453448.

It is an arithmetic number, because the mean of its divisors is an integer number (5089304472).

Almost surely, 2^20310311423 is an apocalyptic number.

20310311423 is a deficient number, since it is larger than the sum of its proper divisors (46906465).

20310311423 is an equidigital number, since it uses as much as digits as its factorization.

20310311423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46906464.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20310311423 its reverse (32411301302), we get a palindrome (52721612725).

The spelling of 20310311423 in words is "twenty billion, three hundred ten million, three hundred eleven thousand, four hundred twenty-three".