20042313433 has 4 divisors (see below), whose sum is σ = 20531150388. Its totient is φ = 19553476480.

The previous prime is 20042313427. The next prime is 20042313443. The reversal of 20042313433 is 33431324002.

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 11554745049 + 8487568384 = 107493^2 + 92128^2 .

It is a cyclic number.

It is not a de Polignac number, because 20042313433 - 2²⁹ = 19505442521 is a prime.

It is a super-2 number, since 2×20042313433² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20042313398 and 20042313407.

It is not an unprimeable number, because it can be changed into a prime (20042313443) 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, 244418416 + ... + 244418497.

It is an arithmetic number, because the mean of its divisors is an integer number (5132787597).

Almost surely, 2^20042313433 is an apocalyptic number.

It is an amenable number.

20042313433 is a deficient number, since it is larger than the sum of its proper divisors (488836955).

20042313433 is an equidigital number, since it uses as much as digits as its factorization.

20042313433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488836954.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 20042313433 its reverse (33431324002), we get a palindrome (53473637435).

The spelling of 20042313433 in words is "twenty billion, forty-two million, three hundred thirteen thousand, four hundred thirty-three".