1003231321421 has 16 divisors (see below), whose sum is σ = 1205866441728. Its totient is φ = 816472051200.

The previous prime is 1003231321403. The next prime is 1003231321427. The reversal of 1003231321421 is 1241231323001.

It is a cyclic number.

It is not a de Polignac number, because 1003231321421 - 2⁶ = 1003231321357 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 (1003231321427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43603460 + ... + 43626461.

It is an arithmetic number, because the mean of its divisors is an integer number (75366652608).

Almost surely, 2^{1003231321421} is an apocalyptic number.

It is an amenable number.

1003231321421 is a deficient number, since it is larger than the sum of its proper divisors (202635120307).

1003231321421 is an equidigital number, since it uses as much as digits as its factorization.

1003231321421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87230012.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1003231321421 its reverse (1241231323001), we get a palindrome (2244462644422).

The spelling of 1003231321421 in words is "one trillion, three billion, two hundred thirty-one million, three hundred twenty-one thousand, four hundred twenty-one".