20310121303 has 2 divisors, whose sum is σ = 20310121304. Its totient is φ = 20310121302.

The previous prime is 20310121291. The next prime is 20310121367. The reversal of 20310121303 is 30312101302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20310121303 - 2¹³ = 20310113111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20310121373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155060651 + 10155060652.

It is an arithmetic number, because the mean of its divisors is an integer number (10155060652).

Almost surely, 2^20310121303 is an apocalyptic number.

20310121303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310121303 is an equidigital number, since it uses as much as digits as its factorization.

20310121303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20310121303 its reverse (30312101302), we get a palindrome (50622222605).

The spelling of 20310121303 in words is "twenty billion, three hundred ten million, one hundred twenty-one thousand, three hundred three".