231230121 has 8 divisors (see below), whose sum is σ = 308386944. Its totient is φ = 154113360.

The previous prime is 231230117. The next prime is 231230143. The reversal of 231230121 is 121032132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231230121 - 2² = 231230117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231230121.

It is not an unprimeable number, because it can be changed into a prime (231230161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8176 + ... + 23006.

It is an arithmetic number, because the mean of its divisors is an integer number (38548368).

Almost surely, 2^231230121 is an apocalyptic number.

It is an amenable number.

231230121 is a deficient number, since it is larger than the sum of its proper divisors (77156823).

231230121 is a wasteful number, since it uses less digits than its factorization.

231230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20031.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 231230121 is about 15206.2526942044. The cubic root of 231230121 is about 613.7829244978.

Adding to 231230121 its reverse (121032132), we get a palindrome (352262253).

The spelling of 231230121 in words is "two hundred thirty-one million, two hundred thirty thousand, one hundred twenty-one".