20240123023 has 4 divisors (see below), whose sum is σ = 20241770440. Its totient is φ = 20238475608.

The previous prime is 20240123009. The next prime is 20240123051. The reversal of 20240123023 is 32032104202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20240123023 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 (20240123003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805140 + ... + 829897.

It is an arithmetic number, because the mean of its divisors is an integer number (5060442610).

Almost surely, 2^20240123023 is an apocalyptic number.

20240123023 is a deficient number, since it is larger than the sum of its proper divisors (1647417).

20240123023 is a wasteful number, since it uses less digits than its factorization.

20240123023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647416.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20240123023 its reverse (32032104202), we get a palindrome (52272227225).

The spelling of 20240123023 in words is "twenty billion, two hundred forty million, one hundred twenty-three thousand, twenty-three".