231132829 has 2 divisors, whose sum is σ = 231132830. Its totient is φ = 231132828.

The previous prime is 231132827. The next prime is 231132857. The reversal of 231132829 is 928231132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129163225 + 101969604 = 11365^2 + 10098^2 .

It is a cyclic number.

It is not a de Polignac number, because 231132829 - 2¹ = 231132827 is a prime.

Together with 231132827, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 231132829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231132827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115566414 + 115566415.

It is an arithmetic number, because the mean of its divisors is an integer number (115566415).

Almost surely, 2^231132829 is an apocalyptic number.

It is an amenable number.

231132829 is a deficient number, since it is larger than the sum of its proper divisors (1).

231132829 is an equidigital number, since it uses as much as digits as its factorization.

231132829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 231132829 is about 15203.0532788647. The cubic root of 231132829 is about 613.6968276615.

The spelling of 231132829 in words is "two hundred thirty-one million, one hundred thirty-two thousand, eight hundred twenty-nine".