1020321023103 has 12 divisors (see below), whose sum is σ = 1473884858160. Its totient is φ = 680173480896.

The previous prime is 1020321023083. The next prime is 1020321023143. The reversal of 1020321023103 is 3013201230201.

1020321023103 is a `hidden beast` number, since 10 + 20 + 321 + 0 + 2 + 310 + 3 = 666.

It is not a de Polignac number, because 1020321023103 - 2²² = 1020316828799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020321023143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3218058 + ... + 3520871.

It is an arithmetic number, because the mean of its divisors is an integer number (122823738180).

Almost surely, 2^{1020321023103} is an apocalyptic number.

1020321023103 is a deficient number, since it is larger than the sum of its proper divisors (453563835057).

1020321023103 is a wasteful number, since it uses less digits than its factorization.

1020321023103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6755758 (or 6755755 counting only the distinct ones).

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

Adding to 1020321023103 its reverse (3013201230201), we get a palindrome (4033522253304).

The spelling of 1020321023103 in words is "one trillion, twenty billion, three hundred twenty-one million, twenty-three thousand, one hundred three".