231430213213 has 2 divisors, whose sum is σ = 231430213214. Its totient is φ = 231430213212.

The previous prime is 231430213211. The next prime is 231430213253. The reversal of 231430213213 is 312312034132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231362924004 + 67289209 = 481002^2 + 8203^2 .

It is a cyclic number.

It is not a de Polignac number, because 231430213213 - 2¹ = 231430213211 is a prime.

Together with 231430213211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231430213211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115715106606 + 115715106607.

It is an arithmetic number, because the mean of its divisors is an integer number (115715106607).

Almost surely, 2^231430213213 is an apocalyptic number.

It is an amenable number.

231430213213 is a deficient number, since it is larger than the sum of its proper divisors (1).

231430213213 is an equidigital number, since it uses as much as digits as its factorization.

231430213213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 231430213213 its reverse (312312034132), we get a palindrome (543742247345).

The spelling of 231430213213 in words is "two hundred thirty-one billion, four hundred thirty million, two hundred thirteen thousand, two hundred thirteen".