20123310253 has 2 divisors, whose sum is σ = 20123310254. Its totient is φ = 20123310252.

The previous prime is 20123310211. The next prime is 20123310257. The reversal of 20123310253 is 35201332102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19864647364 + 258662889 = 140942^2 + 16083^2 .

It is a cyclic number.

It is not a de Polignac number, because 20123310253 - 2²⁵ = 20089755821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123310257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061655126 + 10061655127.

It is an arithmetic number, because the mean of its divisors is an integer number (10061655127).

Almost surely, 2^20123310253 is an apocalyptic number.

It is an amenable number.

20123310253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123310253 is an equidigital number, since it uses as much as digits as its factorization.

20123310253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 20123310253 its reverse (35201332102), we get a palindrome (55324642355).

The spelling of 20123310253 in words is "twenty billion, one hundred twenty-three million, three hundred ten thousand, two hundred fifty-three".