20302034403 has 16 divisors (see below), whose sum is σ = 30950433536. Its totient is φ = 11595912480.

The previous prime is 20302034393. The next prime is 20302034407. The reversal of 20302034403 is 30443020302.

It is not a de Polignac number, because 20302034403 - 2⁴ = 20302034387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20302034403.

It is not an unprimeable number, because it can be changed into a prime (20302034407) 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, 171001 + ... + 264282.

It is an arithmetic number, because the mean of its divisors is an integer number (1934402096).

Almost surely, 2^20302034403 is an apocalyptic number.

20302034403 is a deficient number, since it is larger than the sum of its proper divisors (10648399133).

20302034403 is a wasteful number, since it uses less digits than its factorization.

20302034403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437514.

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 20302034403 its reverse (30443020302), we get a palindrome (50745054705).

The spelling of 20302034403 in words is "twenty billion, three hundred two million, thirty-four thousand, four hundred three".