1323100123203 has 12 divisors (see below), whose sum is σ = 1794540868808. Its totient is φ = 867116458080.

The previous prime is 1323100123157. The next prime is 1323100123231. The reversal of 1323100123203 is 3023210013231.

It is not a de Polignac number, because 1323100123203 - 2⁹ = 1323100122691 is a prime.

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 1323100123203.

It is not an unprimeable number, because it can be changed into a prime (1323100123273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63338218 + ... + 63359103.

Almost surely, 2^{1323100123203} is an apocalyptic number.

1323100123203 is a deficient number, since it is larger than the sum of its proper divisors (471440745605).

1323100123203 is an equidigital number, since it uses as much as digits as its factorization.

1323100123203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126697442 (or 126697383 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1323100123203 its reverse (3023210013231), we get a palindrome (4346310136434).

The spelling of 1323100123203 in words is "one trillion, three hundred twenty-three billion, one hundred million, one hundred twenty-three thousand, two hundred three".