20323043403 has 16 divisors (see below), whose sum is σ = 29465130240. Its totient is φ = 12385063584.

The previous prime is 20323043401. The next prime is 20323043407. The reversal of 20323043403 is 30434032302.

It is not a de Polignac number, because 20323043403 - 2¹ = 20323043401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20323043401) 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, 2525613 + ... + 2533646.

It is an arithmetic number, because the mean of its divisors is an integer number (1841570640).

Almost surely, 2^20323043403 is an apocalyptic number.

20323043403 is a deficient number, since it is larger than the sum of its proper divisors (9142086837).

20323043403 is a wasteful number, since it uses less digits than its factorization.

20323043403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5059378.

The product of its (nonzero) digits is 5184, while the sum is 24.

Adding to 20323043403 its reverse (30434032302), we get a palindrome (50757075705).

The spelling of 20323043403 in words is "twenty billion, three hundred twenty-three million, forty-three thousand, four hundred three".