20243031123 has 8 divisors (see below), whose sum is σ = 30846523648. Its totient is φ = 11567446344.

The previous prime is 20243031097. The next prime is 20243031199. The reversal of 20243031123 is 32113034202.

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

It is not a de Polignac number, because 20243031123 - 2¹³ = 20243022931 is a prime.

It is a super-2 number, since 2×20243031123² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 963953863 = 20243031123 / (2 + 0 + 2 + 4 + 3 + 0 + 3 + 1 + 1 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20243031123.

It is not an unprimeable number, because it can be changed into a prime (20243031923) 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, 481976911 + ... + 481976952.

It is an arithmetic number, because the mean of its divisors is an integer number (3855815456).

Almost surely, 2^20243031123 is an apocalyptic number.

20243031123 is a deficient number, since it is larger than the sum of its proper divisors (10603492525).

20243031123 is an equidigital number, since it uses as much as digits as its factorization.

20243031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963953873.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20243031123 its reverse (32113034202), we get a palindrome (52356065325).

The spelling of 20243031123 in words is "twenty billion, two hundred forty-three million, thirty-one thousand, one hundred twenty-three".