20312302223 has 2 divisors, whose sum is σ = 20312302224. Its totient is φ = 20312302222.

The previous prime is 20312302189. The next prime is 20312302229. The reversal of 20312302223 is 32220321302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20312302223 - 2⁸ = 20312301967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20312302195 and 20312302204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20312302229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156151111 + 10156151112.

It is an arithmetic number, because the mean of its divisors is an integer number (10156151112).

Almost surely, 2^20312302223 is an apocalyptic number.

20312302223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312302223 is an equidigital number, since it uses as much as digits as its factorization.

20312302223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20312302223 its reverse (32220321302), we get a palindrome (52532623525).

The spelling of 20312302223 in words is "twenty billion, three hundred twelve million, three hundred two thousand, two hundred twenty-three".