20341243123 has 8 divisors (see below), whose sum is σ = 21018010496. Its totient is φ = 19665763200.

The previous prime is 20341243073. The next prime is 20341243157. The reversal of 20341243123 is 32134214302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20341243123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20341243523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289686 + ... + 352987.

It is an arithmetic number, because the mean of its divisors is an integer number (2627251312).

Almost surely, 2^20341243123 is an apocalyptic number.

20341243123 is a deficient number, since it is larger than the sum of its proper divisors (676767373).

20341243123 is a wasteful number, since it uses less digits than its factorization.

20341243123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643725.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20341243123 its reverse (32134214302), we get a palindrome (52475457425).

The spelling of 20341243123 in words is "twenty billion, three hundred forty-one million, two hundred forty-three thousand, one hundred twenty-three".