20134020403 has 4 divisors (see below), whose sum is σ = 23010309040. Its totient is φ = 17257731768.

The previous prime is 20134020391. The next prime is 20134020407. The reversal of 20134020403 is 30402043102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30402043102 = 2 ⋅15201021551.

It is a cyclic number.

It is not a de Polignac number, because 20134020403 - 2¹³ = 20134012211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20134020407) 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, 1438144308 + ... + 1438144321.

It is an arithmetic number, because the mean of its divisors is an integer number (5752577260).

Almost surely, 2^20134020403 is an apocalyptic number.

20134020403 is a deficient number, since it is larger than the sum of its proper divisors (2876288637).

20134020403 is an equidigital number, since it uses as much as digits as its factorization.

20134020403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876288636.

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

Adding to 20134020403 its reverse (30402043102), we get a palindrome (50536063505).

The spelling of 20134020403 in words is "twenty billion, one hundred thirty-four million, twenty thousand, four hundred three".