1003123311321 has 16 divisors (see below), whose sum is σ = 1341797184000. Its totient is φ = 666600492288.

The previous prime is 1003123311317. The next prime is 1003123311329. The reversal of 1003123311321 is 1231133213001.

It is a happy number.

It is not a de Polignac number, because 1003123311321 - 2² = 1003123311317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1003123311329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2867800 + ... + 3198518.

It is an arithmetic number, because the mean of its divisors is an integer number (83862324000).

Almost surely, 2^{1003123311321} is an apocalyptic number.

It is an amenable number.

1003123311321 is a deficient number, since it is larger than the sum of its proper divisors (338673872679).

1003123311321 is a wasteful number, since it uses less digits than its factorization.

1003123311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333968.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1003123311321 its reverse (1231133213001), we get a palindrome (2234256524322).

The spelling of 1003123311321 in words is "one trillion, three billion, one hundred twenty-three million, three hundred eleven thousand, three hundred twenty-one".