1020020103 has 24 divisors (see below), whose sum is σ = 1535854320. Its totient is φ = 651530880.

The previous prime is 1020020083. The next prime is 1020020129. The reversal of 1020020103 is 3010200201.

It is a happy number.

1020020103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1020020103 - 2¹³ = 1020011911 is a prime.

It is a super-3 number, since 3×1020020103³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020020173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19275 + ... + 49107.

It is an arithmetic number, because the mean of its divisors is an integer number (63993930).

Almost surely, 2^1020020103 is an apocalyptic number.

1020020103 is a deficient number, since it is larger than the sum of its proper divisors (515834217).

1020020103 is a wasteful number, since it uses less digits than its factorization.

1020020103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29999 (or 29996 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1020020103 is about 31937.7535684650. The cubic root of 1020020103 is about 1006.6293226331.

Adding to 1020020103 its reverse (3010200201), we get a palindrome (4030220304).

It can be divided in two parts, 10200 and 20103, that added together give a palindrome (30303).

The spelling of 1020020103 in words is "one billion, twenty million, twenty thousand, one hundred three".