1020204321403 has 4 divisors (see below), whose sum is σ = 1020287405448. Its totient is φ = 1020121237360.

The previous prime is 1020204321401. The next prime is 1020204321439. The reversal of 1020204321403 is 3041234020201.

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 1020204321403 - 2¹ = 1020204321401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020204321401) 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, 41523601 + ... + 41548162.

It is an arithmetic number, because the mean of its divisors is an integer number (255071851362).

Almost surely, 2^{1020204321403} is an apocalyptic number.

1020204321403 is a deficient number, since it is larger than the sum of its proper divisors (83084045).

1020204321403 is an equidigital number, since it uses as much as digits as its factorization.

1020204321403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83084044.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1020204321403 its reverse (3041234020201), we get a palindrome (4061438341604).

The spelling of 1020204321403 in words is "one trillion, twenty billion, two hundred four million, three hundred twenty-one thousand, four hundred three".