1003203120001 has 4 divisors (see below), whose sum is σ = 1003207643604. Its totient is φ = 1003198596400.

The previous prime is 1003203119923. The next prime is 1003203120037. The reversal of 1003203120001 is 1000213023001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 405482400625 + 597720719376 = 636775^2 + 773124^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003203120001 - 2¹³ = 1003203111809 is a prime.

It is a super-3 number, since 3×1003203120001³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1003203120901) 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, 1911010 + ... + 2378731.

It is an arithmetic number, because the mean of its divisors is an integer number (250801910901).

Almost surely, 2^{1003203120001} is an apocalyptic number.

It is an amenable number.

1003203120001 is a deficient number, since it is larger than the sum of its proper divisors (4523603).

1003203120001 is an equidigital number, since it uses as much as digits as its factorization.

1003203120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4523602.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 1003203120001 its reverse (1000213023001), we get a palindrome (2003416143002).

The spelling of 1003203120001 in words is "one trillion, three billion, two hundred three million, one hundred twenty thousand, one".