123144400203 has 32 divisors (see below), whose sum is σ = 182723154432. Its totient is φ = 73146240000.

The previous prime is 123144400201. The next prime is 123144400229. The reversal of 123144400203 is 302004441321.

It is not a de Polignac number, because 123144400203 - 2¹ = 123144400201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123144400201) 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 31 ways as a sum of consecutive naturals, for example, 142953 + ... + 516453.

It is an arithmetic number, because the mean of its divisors is an integer number (5710098576).

Almost surely, 2^123144400203 is an apocalyptic number.

123144400203 is a deficient number, since it is larger than the sum of its proper divisors (59578754229).

123144400203 is a wasteful number, since it uses less digits than its factorization.

123144400203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373715.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 123144400203 its reverse (302004441321), we get a palindrome (425148841524).

The spelling of 123144400203 in words is "one hundred twenty-three billion, one hundred forty-four million, four hundred thousand, two hundred three".