1003221031323 has 32 divisors (see below), whose sum is σ = 1558912449024. Its totient is φ = 562056625152.

The previous prime is 1003221031313. The next prime is 1003221031411. The reversal of 1003221031323 is 3231301223001.

It is not a de Polignac number, because 1003221031323 - 2¹² = 1003221027227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1003221031323.

It is not an unprimeable number, because it can be changed into a prime (1003221031303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2083440 + ... + 2519357.

It is an arithmetic number, because the mean of its divisors is an integer number (48716014032).

Almost surely, 2^{1003221031323} is an apocalyptic number.

1003221031323 is a deficient number, since it is larger than the sum of its proper divisors (555691417701).

1003221031323 is a wasteful number, since it uses less digits than its factorization.

1003221031323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4603011.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1003221031323 its reverse (3231301223001), we get a palindrome (4234522254324).

The spelling of 1003221031323 in words is "one trillion, three billion, two hundred twenty-one million, thirty-one thousand, three hundred twenty-three".