20343403133 has 4 divisors (see below), whose sum is σ = 20544823068. Its totient is φ = 20141983200.

The previous prime is 20343403121. The next prime is 20343403177. The reversal of 20343403133 is 33130434302.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19366340569 + 977062564 = 139163^2 + 31258^2 .

It is a cyclic number.

It is not a de Polignac number, because 20343403133 - 2²² = 20339208829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343403103) 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, 100709816 + ... + 100710017.

It is an arithmetic number, because the mean of its divisors is an integer number (5136205767).

Almost surely, 2^20343403133 is an apocalyptic number.

It is an amenable number.

20343403133 is a deficient number, since it is larger than the sum of its proper divisors (201419935).

20343403133 is a wasteful number, since it uses less digits than its factorization.

20343403133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201419934.

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 20343403133 its reverse (33130434302), we get a palindrome (53473837435).

The spelling of 20343403133 in words is "twenty billion, three hundred forty-three million, four hundred three thousand, one hundred thirty-three".