100313031209 has 2 divisors, whose sum is σ = 100313031210. Its totient is φ = 100313031208.

The previous prime is 100313031191. The next prime is 100313031241. The reversal of 100313031209 is 902130313001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90914310400 + 9398720809 = 301520^2 + 96947^2 .

It is a cyclic number.

It is not a de Polignac number, because 100313031209 - 2¹⁶ = 100312965673 is a prime.

It is not a weakly prime, because it can be changed into another prime (100313031109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50156515604 + 50156515605.

It is an arithmetic number, because the mean of its divisors is an integer number (50156515605).

Almost surely, 2^100313031209 is an apocalyptic number.

It is an amenable number.

100313031209 is a deficient number, since it is larger than the sum of its proper divisors (1).

100313031209 is an equidigital number, since it uses as much as digits as its factorization.

100313031209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 23.

The spelling of 100313031209 in words is "one hundred billion, three hundred thirteen million, thirty-one thousand, two hundred nine".