20310203129 has 16 divisors (see below), whose sum is σ = 21023815680. Its totient is φ = 19611018000.

The previous prime is 20310203113. The next prime is 20310203131. The reversal of 20310203129 is 92130201302.

It is a cyclic number.

It is not a de Polignac number, because 20310203129 - 2⁴ = 20310203113 is a prime.

It is a super-2 number, since 2×20310203129² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20310203149) 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 in 15 ways as a sum of consecutive naturals, for example, 1126274 + ... + 1144164.

It is an arithmetic number, because the mean of its divisors is an integer number (1313988480).

Almost surely, 2^20310203129 is an apocalyptic number.

It is an amenable number.

20310203129 is a deficient number, since it is larger than the sum of its proper divisors (713612551).

20310203129 is a wasteful number, since it uses less digits than its factorization.

20310203129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18292.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 20310203129 in words is "twenty billion, three hundred ten million, two hundred three thousand, one hundred twenty-nine".