1003123121023 has 4 divisors (see below), whose sum is σ = 1020125207880. Its totient is φ = 986121034168.

The previous prime is 1003123121009. The next prime is 1003123121047. The reversal of 1003123121023 is 3201213213001.

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

It is a cyclic number.

It is not a de Polignac number, because 1003123121023 - 2²¹ = 1003121023871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003123121053) 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, 8501043340 + ... + 8501043457.

It is an arithmetic number, because the mean of its divisors is an integer number (255031301970).

Almost surely, 2^{1003123121023} is an apocalyptic number.

1003123121023 is a deficient number, since it is larger than the sum of its proper divisors (17002086857).

1003123121023 is an equidigital number, since it uses as much as digits as its factorization.

1003123121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17002086856.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1003123121023 its reverse (3201213213001), we get a palindrome (4204336334024).

The spelling of 1003123121023 in words is "one trillion, three billion, one hundred twenty-three million, one hundred twenty-one thousand, twenty-three".