20232321123 has 32 divisors (see below), whose sum is σ = 31368337920. Its totient is φ = 11359722240.

The previous prime is 20232321101. The next prime is 20232321143. The reversal of 20232321123 is 32112323202.

It is a happy number.

It is not a de Polignac number, because 20232321123 - 2⁹ = 20232320611 is a prime.

It is a super-2 number, since 2×20232321123² (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).

It is a self number, because there is not a number n which added to its sum of digits gives 20232321123.

It is not an unprimeable number, because it can be changed into a prime (20232321143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4553583 + ... + 4558023.

It is an arithmetic number, because the mean of its divisors is an integer number (980260560).

Almost surely, 2^20232321123 is an apocalyptic number.

20232321123 is a deficient number, since it is larger than the sum of its proper divisors (11136016797).

20232321123 is a wasteful number, since it uses less digits than its factorization.

20232321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8187.

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

Adding to 20232321123 its reverse (32112323202), we get a palindrome (52344644325).

It can be divided in two parts, 202323 and 21123, that added together give a triangular number (223446 = T₆₆₈).

The spelling of 20232321123 in words is "twenty billion, two hundred thirty-two million, three hundred twenty-one thousand, one hundred twenty-three".