231929329 has 2 divisors, whose sum is σ = 231929330. Its totient is φ = 231929328.

The previous prime is 231929311. The next prime is 231929363. The reversal of 231929329 is 923929132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194658304 + 37271025 = 13952^2 + 6105^2 .

It is a cyclic number.

It is not a de Polignac number, because 231929329 - 2⁵ = 231929297 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 231929291 and 231929300.

It is not a weakly prime, because it can be changed into another prime (231129329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115964664 + 115964665.

It is an arithmetic number, because the mean of its divisors is an integer number (115964665).

Almost surely, 2^231929329 is an apocalyptic number.

It is an amenable number.

231929329 is a deficient number, since it is larger than the sum of its proper divisors (1).

231929329 is an equidigital number, since it uses as much as digits as its factorization.

231929329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 40.

The square root of 231929329 is about 15229.2261458027. The cubic root of 231929329 is about 614.4009669324.

The spelling of 231929329 in words is "two hundred thirty-one million, nine hundred twenty-nine thousand, three hundred twenty-nine".