231310130209 has 16 divisors (see below), whose sum is σ = 243808266240. Its totient is φ = 219016353600.

The previous prime is 231310130189. The next prime is 231310130221. The reversal of 231310130209 is 902031013132.

231310130209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 231310130209 - 2³¹ = 229162646561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231310130309) 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, 16804672 + ... + 16818430.

It is an arithmetic number, because the mean of its divisors is an integer number (15238016640).

Almost surely, 2^231310130209 is an apocalyptic number.

It is an amenable number.

231310130209 is a deficient number, since it is larger than the sum of its proper divisors (12498136031).

231310130209 is a wasteful number, since it uses less digits than its factorization.

231310130209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21120.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 231310130209 in words is "two hundred thirty-one billion, three hundred ten million, one hundred thirty thousand, two hundred nine".