1020031103 has 12 divisors (see below), whose sum is σ = 1262322288. Its totient is φ = 807056640.

The previous prime is 1020031091. The next prime is 1020031109. The reversal of 1020031103 is 3011300201.

It is not a de Polignac number, because 1020031103 - 2⁶ = 1020031039 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020031109) 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, 429938 + ... + 432303.

It is an arithmetic number, because the mean of its divisors is an integer number (105193524).

Almost surely, 2^1020031103 is an apocalyptic number.

1020031103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1020031103 is a deficient number, since it is larger than the sum of its proper divisors (242291185).

1020031103 is an equidigital number, since it uses as much as digits as its factorization.

1020031103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862274 (or 862261 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1020031103 is about 31937.9257779838. The cubic root of 1020031103 is about 1006.6329411509.

Adding to 1020031103 its reverse (3011300201), we get a palindrome (4031331304).

The spelling of 1020031103 in words is "one billion, twenty million, thirty-one thousand, one hundred three".