1011113203 has 4 divisors (see below), whose sum is σ = 1012398760. Its totient is φ = 1009827648.

The previous prime is 1011113197. The next prime is 1011113219. The reversal of 1011113203 is 3023111101.

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 1011113203 - 2¹⁷ = 1010982131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011113273) 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, 641598 + ... + 643171.

It is an arithmetic number, because the mean of its divisors is an integer number (253099690).

Almost surely, 2^1011113203 is an apocalyptic number.

1011113203 is a deficient number, since it is larger than the sum of its proper divisors (1285557).

1011113203 is an equidigital number, since it uses as much as digits as its factorization.

1011113203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285556.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1011113203 is about 31798.0062739789. The cubic root of 1011113203 is about 1003.6907625139.

Adding to 1011113203 its reverse (3023111101), we get a palindrome (4034224304).

The spelling of 1011113203 in words is "one billion, eleven million, one hundred thirteen thousand, two hundred three".