123001311010203 has 8 divisors (see below), whose sum is σ = 182224164459600. Its totient is φ = 82000874006784.

The previous prime is 123001311010183. The next prime is 123001311010211. The reversal of 123001311010203 is 302010113100321.

123001311010203 is a `hidden beast` number, since 1 + 230 + 0 + 131 + 101 + 0 + 203 = 666.

It is not a de Polignac number, because 123001311010203 - 2¹⁷ = 123001310879131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123001311010103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2277802055718 + ... + 2277802055771.

It is an arithmetic number, because the mean of its divisors is an integer number (22778020557450).

Almost surely, 2^{123001311010203} is an apocalyptic number.

123001311010203 is a deficient number, since it is larger than the sum of its proper divisors (59222853449397).

123001311010203 is an equidigital number, since it uses as much as digits as its factorization.

123001311010203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4555604111498 (or 4555604111492 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 123001311010203 its reverse (302010113100321), we get a palindrome (425011424110524).

The spelling of 123001311010203 in words is "one hundred twenty-three trillion, one billion, three hundred eleven million, ten thousand, two hundred three".