231303329 has 2 divisors, whose sum is σ = 231303330. Its totient is φ = 231303328.

The previous prime is 231303323. The next prime is 231303337. The reversal of 231303329 is 923303132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230584225 + 719104 = 15185^2 + 848^2 .

It is a cyclic number.

It is not a de Polignac number, because 231303329 - 2²⁴ = 214526113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231303298 and 231303307.

It is not a weakly prime, because it can be changed into another prime (231303323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115651664 + 115651665.

It is an arithmetic number, because the mean of its divisors is an integer number (115651665).

Almost surely, 2^231303329 is an apocalyptic number.

It is an amenable number.

231303329 is a deficient number, since it is larger than the sum of its proper divisors (1).

231303329 is an equidigital number, since it uses as much as digits as its factorization.

231303329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 26.

The square root of 231303329 is about 15208.6596713846. The cubic root of 231303329 is about 613.8476927021.

The spelling of 231303329 in words is "two hundred thirty-one million, three hundred three thousand, three hundred twenty-nine".