1001020103 has 4 divisors (see below), whose sum is σ = 1003856208. Its totient is φ = 998184000.

The previous prime is 1001020093. The next prime is 1001020109. The reversal of 1001020103 is 3010201001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3010201001 = 8839 ⋅340559.

It is a cyclic number.

It is not a de Polignac number, because 1001020103 - 2⁴ = 1001020087 is a prime.

It is a super-2 number, since 2×1001020103² = 2004082493220261218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001020109) 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, 1417523 + ... + 1418228.

It is an arithmetic number, because the mean of its divisors is an integer number (250964052).

Almost surely, 2^1001020103 is an apocalyptic number.

1001020103 is a deficient number, since it is larger than the sum of its proper divisors (2836105).

1001020103 is an equidigital number, since it uses as much as digits as its factorization.

1001020103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836104.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1001020103 is about 31638.9017350476. The cubic root of 1001020103 is about 1000.3399187755.

Adding to 1001020103 its reverse (3010201001), we get a palindrome (4011221104).

The spelling of 1001020103 in words is "one billion, one million, twenty thousand, one hundred three".