12423203144 has 32 divisors (see below), whose sum is σ = 25732771200. Its totient is φ = 5575427520.

The previous prime is 12423203131. The next prime is 12423203147. The reversal of 12423203144 is 44130232421.

It is not an unprimeable number, because it can be changed into a prime (12423203147) 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, 886547 + ... + 900450.

It is an arithmetic number, because the mean of its divisors is an integer number (804149100).

Almost surely, 2^12423203144 is an apocalyptic number.

It is an amenable number.

12423203144 is an abundant number, since it is smaller than the sum of its proper divisors (13309568056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12423203144 is a wasteful number, since it uses less digits than its factorization.

12423203144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787093 (or 1787089 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 12423203144 its reverse (44130232421), we get a palindrome (56553435565).

The spelling of 12423203144 in words is "twelve billion, four hundred twenty-three million, two hundred three thousand, one hundred forty-four".