231302230121 has 4 divisors (see below), whose sum is σ = 231304343952. Its totient is φ = 231300116292.

The previous prime is 231302230073. The next prime is 231302230127. The reversal of 231302230121 is 121032203132.

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 231302230121 - 2¹⁸ = 231301967977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231302230093 and 231302230102.

It is not an unprimeable number, because it can be changed into a prime (231302230127) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 883271 + ... + 1114796.

It is an arithmetic number, because the mean of its divisors is an integer number (57826085988).

Almost surely, 2^231302230121 is an apocalyptic number.

It is an amenable number.

231302230121 is a deficient number, since it is larger than the sum of its proper divisors (2113831).

231302230121 is a wasteful number, since it uses less digits than its factorization.

231302230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113830.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231302230121 its reverse (121032203132), we get a palindrome (352334433253).

The spelling of 231302230121 in words is "two hundred thirty-one billion, three hundred two million, two hundred thirty thousand, one hundred twenty-one".