20312323103 has 12 divisors (see below), whose sum is σ = 21448230408. Its totient is φ = 19233765360.

The previous prime is 20312323091. The next prime is 20312323153. The reversal of 20312323103 is 30132321302.

It is not a de Polignac number, because 20312323103 - 2¹⁸ = 20312060959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312323153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 782513 + ... + 808053.

It is an arithmetic number, because the mean of its divisors is an integer number (1787352534).

Almost surely, 2^20312323103 is an apocalyptic number.

20312323103 is a deficient number, since it is larger than the sum of its proper divisors (1135907305).

20312323103 is a wasteful number, since it uses less digits than its factorization.

20312323103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27782 (or 27763 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20312323103 its reverse (30132321302), we get a palindrome (50444644405).

The spelling of 20312323103 in words is "twenty billion, three hundred twelve million, three hundred twenty-three thousand, one hundred three".