20523054223 has 4 divisors (see below), whose sum is σ = 23454919120. Its totient is φ = 17591189328.

The previous prime is 20523054221. The next prime is 20523054241. The reversal of 20523054223 is 32245032502.

It is a happy number.

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 20523054223 - 2¹ = 20523054221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20523054191 and 20523054200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20523054221) 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, 1465932438 + ... + 1465932451.

It is an arithmetic number, because the mean of its divisors is an integer number (5863729780).

Almost surely, 2^20523054223 is an apocalyptic number.

20523054223 is a deficient number, since it is larger than the sum of its proper divisors (2931864897).

20523054223 is an equidigital number, since it uses as much as digits as its factorization.

20523054223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931864896.

The product of its (nonzero) digits is 14400, while the sum is 28.

Adding to 20523054223 its reverse (32245032502), we get a palindrome (52768086725).

The spelling of 20523054223 in words is "twenty billion, five hundred twenty-three million, fifty-four thousand, two hundred twenty-three".