231364321 has 2 divisors, whose sum is σ = 231364322. Its totient is φ = 231364320.

The previous prime is 231364307. The next prime is 231364327. The reversal of 231364321 is 123463132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227677921 + 3686400 = 15089^2 + 1920^2 .

It is a cyclic number.

It is not a de Polignac number, because 231364321 - 2¹¹ = 231362273 is a prime.

It is a super-3 number, since 3×231364321³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (231364327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115682160 + 115682161.

It is an arithmetic number, because the mean of its divisors is an integer number (115682161).

Almost surely, 2^231364321 is an apocalyptic number.

It is an amenable number.

231364321 is a deficient number, since it is larger than the sum of its proper divisors (1).

231364321 is an equidigital number, since it uses as much as digits as its factorization.

231364321 is an odious number, because the sum of its binary digits is odd.

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

The square root of 231364321 is about 15210.6647126284. The cubic root of 231364321 is about 613.9016427948.

The spelling of 231364321 in words is "two hundred thirty-one million, three hundred sixty-four thousand, three hundred twenty-one".