20243242103 has 16 divisors (see below), whose sum is σ = 24234992640. Its totient is φ = 16532330496.

The previous prime is 20243242007. The next prime is 20243242121. The reversal of 20243242103 is 30124234202.

It is a cyclic number.

It is not a de Polignac number, because 20243242103 - 2⁸ = 20243241847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243242003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203243 + ... + 285996.

It is an arithmetic number, because the mean of its divisors is an integer number (1514687040).

Almost surely, 2^20243242103 is an apocalyptic number.

20243242103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20243242103 is a deficient number, since it is larger than the sum of its proper divisors (3991750537).

20243242103 is a wasteful number, since it uses less digits than its factorization.

20243242103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489526.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20243242103 its reverse (30124234202), we get a palindrome (50367476305).

The spelling of 20243242103 in words is "twenty billion, two hundred forty-three million, two hundred forty-two thousand, one hundred three".