100031121203 has 16 divisors (see below), whose sum is σ = 113103826080. Its totient is φ = 87821750016.

The previous prime is 100031121187. The next prime is 100031121227. The reversal of 100031121203 is 302121130001.

It is not a de Polignac number, because 100031121203 - 2⁴ = 100031121187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100031121103) 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, 1954850 + ... + 2005367.

It is an arithmetic number, because the mean of its divisors is an integer number (7068989130).

Almost surely, 2^100031121203 is an apocalyptic number.

100031121203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

100031121203 is a deficient number, since it is larger than the sum of its proper divisors (13072704877).

100031121203 is a wasteful number, since it uses less digits than its factorization.

100031121203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960326.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 100031121203 its reverse (302121130001), we get a palindrome (402152251204).

The spelling of 100031121203 in words is "one hundred billion, thirty-one million, one hundred twenty-one thousand, two hundred three".