20243102431 has 4 divisors (see below), whose sum is σ = 20377162864. Its totient is φ = 20109042000.

The previous prime is 20243102371. The next prime is 20243102443. The reversal of 20243102431 is 13420134202.

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 20243102431 - 2¹³ = 20243094239 is a prime.

It is a super-2 number, since 2×20243102431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243102471) 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, 67029990 + ... + 67030291.

It is an arithmetic number, because the mean of its divisors is an integer number (5094290716).

Almost surely, 2^20243102431 is an apocalyptic number.

20243102431 is a deficient number, since it is larger than the sum of its proper divisors (134060433).

20243102431 is a wasteful number, since it uses less digits than its factorization.

20243102431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134060432.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20243102431 its reverse (13420134202), we get a palindrome (33663236633).

The spelling of 20243102431 in words is "twenty billion, two hundred forty-three million, one hundred two thousand, four hundred thirty-one".