100131003209 has 4 divisors (see below), whose sum is σ = 100168691604. Its totient is φ = 100093314816.

The previous prime is 100131003199. The next prime is 100131003211. The reversal of 100131003209 is 902300131001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38228070400 + 61902932809 = 195520^2 + 248803^2 .

It is a cyclic number.

It is not a de Polignac number, because 100131003209 - 2³⁶ = 31411526473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100131003229) 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, 18840212 + ... + 18845525.

It is an arithmetic number, because the mean of its divisors is an integer number (25042172901).

Almost surely, 2^100131003209 is an apocalyptic number.

It is an amenable number.

100131003209 is a deficient number, since it is larger than the sum of its proper divisors (37688395).

100131003209 is an equidigital number, since it uses as much as digits as its factorization.

100131003209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37688394.

The product of its (nonzero) digits is 162, while the sum is 20.

The spelling of 100131003209 in words is "one hundred billion, one hundred thirty-one million, three thousand, two hundred nine".