20113123423 has 8 divisors (see below), whose sum is σ = 21113832960. Its totient is φ = 19134407640.

The previous prime is 20113123411. The next prime is 20113123501. The reversal of 20113123423 is 32432131102.

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

It is a cyclic number.

It is not a de Polignac number, because 20113123423 - 2¹⁷ = 20112992351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20113123394 and 20113123403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113123403) 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, 5496565 + ... + 5500222.

It is an arithmetic number, because the mean of its divisors is an integer number (2639229120).

Almost surely, 2^20113123423 is an apocalyptic number.

20113123423 is a deficient number, since it is larger than the sum of its proper divisors (1000709537).

20113123423 is a wasteful number, since it uses less digits than its factorization.

20113123423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10996877.

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

Adding to 20113123423 its reverse (32432131102), we get a palindrome (52545254525).

The spelling of 20113123423 in words is "twenty billion, one hundred thirteen million, one hundred twenty-three thousand, four hundred twenty-three".