231230130121 has 4 divisors (see below), whose sum is σ = 231378451200. Its totient is φ = 231081809044.

The previous prime is 231230130119. The next prime is 231230130143. The reversal of 231230130121 is 121031032132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231230130121 - 2¹ = 231230130119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231230137121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74158201 + ... + 74161318.

It is an arithmetic number, because the mean of its divisors is an integer number (57844612800).

Almost surely, 2^231230130121 is an apocalyptic number.

It is an amenable number.

231230130121 is a deficient number, since it is larger than the sum of its proper divisors (148321079).

231230130121 is a wasteful number, since it uses less digits than its factorization.

231230130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148321078.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 231230130121 its reverse (121031032132), we get a palindrome (352261162253).

The spelling of 231230130121 in words is "two hundred thirty-one billion, two hundred thirty million, one hundred thirty thousand, one hundred twenty-one".