20400201303 has 4 divisors (see below), whose sum is σ = 27200268408. Its totient is φ = 13600134200.

The previous prime is 20400201301. The next prime is 20400201307. The reversal of 20400201303 is 30310200402.

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 20400201303 - 2¹ = 20400201301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20400201301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3400033548 + ... + 3400033553.

It is an arithmetic number, because the mean of its divisors is an integer number (6800067102).

Almost surely, 2^20400201303 is an apocalyptic number.

20400201303 is a deficient number, since it is larger than the sum of its proper divisors (6800067105).

20400201303 is an equidigital number, since it uses as much as digits as its factorization.

20400201303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6800067104.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20400201303 its reverse (30310200402), we get a palindrome (50710401705).

Subtracting 20400201303 from its reverse (30310200402), we obtain a palindrome (9909999099).

The spelling of 20400201303 in words is "twenty billion, four hundred million, two hundred one thousand, three hundred three".