1031021203103 has 4 divisors (see below), whose sum is σ = 1031067271728. Its totient is φ = 1030975134480.

The previous prime is 1031021203087. The next prime is 1031021203123. The reversal of 1031021203103 is 3013021201301.

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 1031021203103 - 2⁴ = 1031021203087 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 (1031021203123) 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, 23000726 + ... + 23045507.

It is an arithmetic number, because the mean of its divisors is an integer number (257766817932).

Almost surely, 2^{1031021203103} is an apocalyptic number.

1031021203103 is a deficient number, since it is larger than the sum of its proper divisors (46068625).

1031021203103 is an equidigital number, since it uses as much as digits as its factorization.

1031021203103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46068624.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1031021203103 its reverse (3013021201301), we get a palindrome (4044042404404).

The spelling of 1031021203103 in words is "one trillion, thirty-one billion, twenty-one million, two hundred three thousand, one hundred three".