231230012210421 has 12 divisors (see below), whose sum is σ = 358642467918432. Its totient is φ = 132131435548728.

The previous prime is 231230012210377. The next prime is 231230012210437. The reversal of 231230012210421 is 124012210032132.

It is not a de Polignac number, because 231230012210421 - 2²³ = 231230003821813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231230012210391 and 231230012210400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231230012110421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 786496640025 + ... + 786496640318.

It is an arithmetic number, because the mean of its divisors is an integer number (29886872326536).

Almost surely, 2^{231230012210421} is an apocalyptic number.

231230012210421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

231230012210421 is a deficient number, since it is larger than the sum of its proper divisors (127412455708011).

231230012210421 is a wasteful number, since it uses less digits than its factorization.

231230012210421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572993280360 (or 1572993280353 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 231230012210421 its reverse (124012210032132), we get a palindrome (355242222242553).

The spelling of 231230012210421 in words is "two hundred thirty-one trillion, two hundred thirty billion, twelve million, two hundred ten thousand, four hundred twenty-one".