20401403203 has 4 divisors (see below), whose sum is σ = 20404059408. Its totient is φ = 20398747000.

The previous prime is 20401403201. The next prime is 20401403219. The reversal of 20401403203 is 30230410402.

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 20401403203 - 2¹ = 20401403201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401403201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1316548 + ... + 1331953.

It is an arithmetic number, because the mean of its divisors is an integer number (5101014852).

Almost surely, 2^20401403203 is an apocalyptic number.

20401403203 is a deficient number, since it is larger than the sum of its proper divisors (2656205).

20401403203 is an equidigital number, since it uses as much as digits as its factorization.

20401403203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656204.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20401403203 its reverse (30230410402), we get a palindrome (50631813605).

The spelling of 20401403203 in words is "twenty billion, four hundred one million, four hundred three thousand, two hundred three".