1013303203123 has 4 divisors (see below), whose sum is σ = 1013422888360. Its totient is φ = 1013183517888.

The previous prime is 1013303203097. The next prime is 1013303203147. The reversal of 1013303203123 is 3213023033101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1013303203123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1013303203094 and 1013303203103.

It is not an unprimeable number, because it can be changed into a prime (1013303203163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59829918 + ... + 59846851.

It is an arithmetic number, because the mean of its divisors is an integer number (253355722090).

Almost surely, 2^{1013303203123} is an apocalyptic number.

1013303203123 is a deficient number, since it is larger than the sum of its proper divisors (119685237).

1013303203123 is an equidigital number, since it uses as much as digits as its factorization.

1013303203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119685236.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 1013303203123 its reverse (3213023033101), we get a palindrome (4226326236224).

The spelling of 1013303203123 in words is "one trillion, thirteen billion, three hundred three million, two hundred three thousand, one hundred twenty-three".