231011231009 has 12 divisors (see below), whose sum is σ = 250232996592. Its totient is φ = 213168898800.

The previous prime is 231011230973. The next prime is 231011231023. The reversal of 231011231009 is 900132110132.

231011231009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231011231009 - 2²⁴ = 230994453793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231011231039) 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 11 ways as a sum of consecutive naturals, for example, 272054 + ... + 732144.

It is an arithmetic number, because the mean of its divisors is an integer number (20852749716).

Almost surely, 2^231011231009 is an apocalyptic number.

It is an amenable number.

231011231009 is a deficient number, since it is larger than the sum of its proper divisors (19221765583).

231011231009 is a wasteful number, since it uses less digits than its factorization.

231011231009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463088 (or 463075 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 231011231009 in words is "two hundred thirty-one billion, eleven million, two hundred thirty-one thousand, nine".