20412313123 has 4 divisors (see below), whose sum is σ = 20423999080. Its totient is φ = 20400627168.

The previous prime is 20412313093. The next prime is 20412313127. The reversal of 20412313123 is 32131321402.

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 20412313123 - 2⁹ = 20412312611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20412313094 and 20412313103.

It is not an unprimeable number, because it can be changed into a prime (20412313127) 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, 5840358 + ... + 5843851.

It is an arithmetic number, because the mean of its divisors is an integer number (5105999770).

Almost surely, 2^20412313123 is an apocalyptic number.

20412313123 is a deficient number, since it is larger than the sum of its proper divisors (11685957).

20412313123 is a wasteful number, since it uses less digits than its factorization.

20412313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11685956.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20412313123 its reverse (32131321402), we get a palindrome (52543634525).

The spelling of 20412313123 in words is "twenty billion, four hundred twelve million, three hundred thirteen thousand, one hundred twenty-three".