20312230003 has 32 divisors (see below), whose sum is σ = 24402954240. Its totient is φ = 16702640640.

The previous prime is 20312229979. The next prime is 20312230007. The reversal of 20312230003 is 30003221302.

It is a cyclic number.

It is not a de Polignac number, because 20312230003 - 2²¹ = 20310132851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20312230007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7838238 + ... + 7840828.

It is an arithmetic number, because the mean of its divisors is an integer number (762592320).

Almost surely, 2^20312230003 is an apocalyptic number.

20312230003 is a deficient number, since it is larger than the sum of its proper divisors (4090724237).

20312230003 is a wasteful number, since it uses less digits than its factorization.

20312230003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4507.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20312230003 its reverse (30003221302), we get a palindrome (50315451305).

The spelling of 20312230003 in words is "twenty billion, three hundred twelve million, two hundred thirty thousand, three".