1203103323123 has 32 divisors (see below), whose sum is σ = 1800745309440. Its totient is φ = 709384341120.

The previous prime is 1203103323043. The next prime is 1203103323157. The reversal of 1203103323123 is 3213233013021.

It is a de Polignac number, because none of the positive numbers 2^k-1203103323123 is a prime.

It is a super-2 number, since 2×1203103323123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1203103323093 and 1203103323102.

It is not an unprimeable number, because it can be changed into a prime (1203103324123) 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, 3911961 + ... + 4208282.

It is an arithmetic number, because the mean of its divisors is an integer number (56273290920).

Almost surely, 2^{1203103323123} is an apocalyptic number.

1203103323123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1203103323123 is a deficient number, since it is larger than the sum of its proper divisors (597641986317).

1203103323123 is a wasteful number, since it uses less digits than its factorization.

1203103323123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8120419.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1203103323123 its reverse (3213233013021), we get a palindrome (4416336336144).

The spelling of 1203103323123 in words is "one trillion, two hundred three billion, one hundred three million, three hundred twenty-three thousand, one hundred twenty-three".