232229521 has 2 divisors, whose sum is σ = 232229522. Its totient is φ = 232229520.

The previous prime is 232229519. The next prime is 232229531. The reversal of 232229521 is 125922232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214915600 + 17313921 = 14660^2 + 4161^2 .

It is a cyclic number.

It is not a de Polignac number, because 232229521 - 2¹ = 232229519 is a prime.

Together with 232229519, 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 232229521.

It is not a weakly prime, because it can be changed into another prime (232229531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116114760 + 116114761.

It is an arithmetic number, because the mean of its divisors is an integer number (116114761).

Almost surely, 2^232229521 is an apocalyptic number.

It is an amenable number.

232229521 is a deficient number, since it is larger than the sum of its proper divisors (1).

232229521 is an equidigital number, since it uses as much as digits as its factorization.

232229521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 232229521 is about 15239.0787451210. The cubic root of 232229521 is about 614.6659308888.

The spelling of 232229521 in words is "two hundred thirty-two million, two hundred twenty-nine thousand, five hundred twenty-one".