1020321032103 has 6 divisors (see below), whose sum is σ = 1473797046384. Its totient is φ = 680214021396.

The previous prime is 1020321032083. The next prime is 1020321032149. The reversal of 1020321032103 is 3012301230201.

1020321032103 is a `hidden beast` number, since 1 + 0 + 20 + 321 + 0 + 321 + 0 + 3 = 666.

It is not a de Polignac number, because 1020321032103 - 2¹⁷ = 1020320901031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020321032303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56684501775 + ... + 56684501792.

It is an arithmetic number, because the mean of its divisors is an integer number (245632841064).

Almost surely, 2^{1020321032103} is an apocalyptic number.

1020321032103 is a deficient number, since it is larger than the sum of its proper divisors (453476014281).

1020321032103 is a wasteful number, since it uses less digits than its factorization.

1020321032103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113369003573 (or 113369003570 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1020321032103 its reverse (3012301230201), we get a palindrome (4032622262304).

The spelling of 1020321032103 in words is "one trillion, twenty billion, three hundred twenty-one million, thirty-two thousand, one hundred three".