20403103323 has 16 divisors (see below), whose sum is σ = 28207257120. Its totient is φ = 13102677504.

The previous prime is 20403103321. The next prime is 20403103337. The reversal of 20403103323 is 32330130402.

It is not a de Polignac number, because 20403103323 - 2¹ = 20403103321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20403103323.

It is not an unprimeable number, because it can be changed into a prime (20403103321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233136 + ... + 308477.

It is an arithmetic number, because the mean of its divisors is an integer number (1762953570).

Almost surely, 2^20403103323 is an apocalyptic number.

20403103323 is a deficient number, since it is larger than the sum of its proper divisors (7804153797).

20403103323 is a wasteful number, since it uses less digits than its factorization.

20403103323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542078.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20403103323 its reverse (32330130402), we get a palindrome (52733233725).

The spelling of 20403103323 in words is "twenty billion, four hundred three million, one hundred three thousand, three hundred twenty-three".