1031100203 has 16 divisors (see below), whose sum is σ = 1193310720. Its totient is φ = 872660736.

The previous prime is 1031100197. The next prime is 1031100233. The reversal of 1031100203 is 3020011301.

It is a de Polignac number, because none of the positive numbers 2^k-1031100203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1031100233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340028 + ... + 343046.

It is an arithmetic number, because the mean of its divisors is an integer number (74581920).

Almost surely, 2^1031100203 is an apocalyptic number.

1031100203 is a deficient number, since it is larger than the sum of its proper divisors (162210517).

1031100203 is an equidigital number, since it uses as much as digits as its factorization.

1031100203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3626.

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

The square root of 1031100203 is about 32110.7490258325. The cubic root of 1031100203 is about 1010.2610843519.

Adding to 1031100203 its reverse (3020011301), we get a palindrome (4051111504).

The spelling of 1031100203 in words is "one billion, thirty-one million, one hundred thousand, two hundred three".