20402324003 has 4 divisors (see below), whose sum is σ = 20402654880. Its totient is φ = 20401993128.

The previous prime is 20402323967. The next prime is 20402324009. The reversal of 20402324003 is 30042320402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20402324003 - 2¹⁸ = 20402061859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20402324009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42488 + ... + 206421.

It is an arithmetic number, because the mean of its divisors is an integer number (5100663720).

Almost surely, 2^20402324003 is an apocalyptic number.

20402324003 is a deficient number, since it is larger than the sum of its proper divisors (330877).

20402324003 is an equidigital number, since it uses as much as digits as its factorization.

20402324003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330876.

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20402324003 its reverse (30042320402), we get a palindrome (50444644405).

The spelling of 20402324003 in words is "twenty billion, four hundred two million, three hundred twenty-four thousand, three".