231210323 has 2 divisors, whose sum is σ = 231210324. Its totient is φ = 231210322.

The previous prime is 231210277. The next prime is 231210347. The reversal of 231210323 is 323012132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231210323 is a prime.

It is not a weakly prime, because it can be changed into another prime (231210223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115605161 + 115605162.

It is an arithmetic number, because the mean of its divisors is an integer number (115605162).

Almost surely, 2^231210323 is an apocalyptic number.

231210323 is a deficient number, since it is larger than the sum of its proper divisors (1).

231210323 is an equidigital number, since it uses as much as digits as its factorization.

231210323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 231210323 is about 15205.6016980585. The cubic root of 231210323 is about 613.7654065650.

Adding to 231210323 its reverse (323012132), we get a palindrome (554222455).

The spelling of 231210323 in words is "two hundred thirty-one million, two hundred ten thousand, three hundred twenty-three".