231030123009 has 64 divisors (see below), whose sum is σ = 365515358208. Its totient is φ = 127062950400.

The previous prime is 231030122933. The next prime is 231030123013. The reversal of 231030123009 is 900321030132.

It is not a de Polignac number, because 231030123009 - 2²⁵ = 230996568577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231030123009.

It is not an unprimeable number, because it can be changed into a prime (231030123089) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24028287 + ... + 24037899.

It is an arithmetic number, because the mean of its divisors is an integer number (5711177472).

Almost surely, 2^231030123009 is an apocalyptic number.

It is an amenable number.

231030123009 is a deficient number, since it is larger than the sum of its proper divisors (134485235199).

231030123009 is a wasteful number, since it uses less digits than its factorization.

231030123009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10038.

The product of its (nonzero) digits is 972, while the sum is 24.

The spelling of 231030123009 in words is "two hundred thirty-one billion, thirty million, one hundred twenty-three thousand, nine".