20342243133 has 6 divisors (see below), whose sum is σ = 29383240094. Its totient is φ = 13561495416.

The previous prime is 20342243099. The next prime is 20342243149. The reversal of 20342243133 is 33134224302.

20342243133 is a `hidden beast` number, since 2 + 0 + 342 + 2 + 4 + 313 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19745027289 + 597215844 = 140517^2 + 24438^2 .

It is not a de Polignac number, because 20342243133 - 2¹² = 20342239037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20342243097 and 20342243106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342243153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1130124610 + ... + 1130124627.

Almost surely, 2^20342243133 is an apocalyptic number.

It is an amenable number.

20342243133 is a deficient number, since it is larger than the sum of its proper divisors (9040996961).

20342243133 is a wasteful number, since it uses less digits than its factorization.

20342243133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260249243 (or 2260249240 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 20342243133 its reverse (33134224302), we get a palindrome (53476467435).

The spelling of 20342243133 in words is "twenty billion, three hundred forty-two million, two hundred forty-three thousand, one hundred thirty-three".