231043221035 has 16 divisors (see below), whose sum is σ = 302768140032. Its totient is φ = 167858344800.

The previous prime is 231043221029. The next prime is 231043221077. The reversal of 231043221035 is 530122340132.

It is a happy number.

It is not a de Polignac number, because 231043221035 - 2²⁴ = 231026443819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231043220995 and 231043221013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2109719 + ... + 2216528.

It is an arithmetic number, because the mean of its divisors is an integer number (18923008752).

Almost surely, 2^231043221035 is an apocalyptic number.

231043221035 is a deficient number, since it is larger than the sum of its proper divisors (71724918997).

231043221035 is a wasteful number, since it uses less digits than its factorization.

231043221035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4327234.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 231043221035 its reverse (530122340132), we get a palindrome (761165561167).

The spelling of 231043221035 in words is "two hundred thirty-one billion, forty-three million, two hundred twenty-one thousand, thirty-five".