1000013203 has 32 divisors (see below), whose sum is σ = 1204042752. Its totient is φ = 812851200.

The previous prime is 1000013191. The next prime is 1000013207. The reversal of 1000013203 is 3023100001.

It is not a de Polignac number, because 1000013203 - 2²⁹ = 463142291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000013203.

It is not an unprimeable number, because it can be changed into a prime (1000013207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1559763 + ... + 1560403.

It is an arithmetic number, because the mean of its divisors is an integer number (37626336).

Almost surely, 2^1000013203 is an apocalyptic number.

1000013203 is a deficient number, since it is larger than the sum of its proper divisors (204029549).

1000013203 is an equidigital number, since it uses as much as digits as its factorization.

1000013203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1000013203 is about 31622.9853587545. The cubic root of 1000013203 is about 1000.0044009806.

Adding to 1000013203 its reverse (3023100001), we get a palindrome (4023113204).

The spelling of 1000013203 in words is "one billion, thirteen thousand, two hundred three".