1011000103 has 4 divisors (see below), whose sum is σ = 1011439888. Its totient is φ = 1010560320.

The previous prime is 1011000101. The next prime is 1011000187. The reversal of 1011000103 is 3010001101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011000103 - 2¹ = 1011000101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011000101) 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, 216426 + ... + 221047.

It is an arithmetic number, because the mean of its divisors is an integer number (252859972).

Almost surely, 2^1011000103 is an apocalyptic number.

1011000103 is a deficient number, since it is larger than the sum of its proper divisors (439785).

1011000103 is an equidigital number, since it uses as much as digits as its factorization.

1011000103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439784.

The product of its (nonzero) digits is 3, while the sum is 7.

The square root of 1011000103 is about 31796.2278108583. The cubic root of 1011000103 is about 1003.6533378689.

Adding to 1011000103 its reverse (3010001101), we get a palindrome (4021001204).

The spelling of 1011000103 in words is "one billion, eleven million, one hundred three", and thus it is an aban number.