20123123023 has 8 divisors (see below), whose sum is σ = 21368245392. Its totient is φ = 18884823936.

The previous prime is 20123123017. The next prime is 20123123047. The reversal of 20123123023 is 32032132102.

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 20123123023 - 2⁹ = 20123122511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123123063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1699740 + ... + 1711537.

It is an arithmetic number, because the mean of its divisors is an integer number (2671030674).

Almost surely, 2^20123123023 is an apocalyptic number.

20123123023 is a deficient number, since it is larger than the sum of its proper divisors (1245122369).

20123123023 is a wasteful number, since it uses less digits than its factorization.

20123123023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411641.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20123123023 its reverse (32032132102), we get a palindrome (52155255125).

The spelling of 20123123023 in words is "twenty billion, one hundred twenty-three million, one hundred twenty-three thousand, twenty-three".