232768021 has 2 divisors, whose sum is σ = 232768022. Its totient is φ = 232768020.

The previous prime is 232767989. The next prime is 232768037. The reversal of 232768021 is 120867232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180364900 + 52403121 = 13430^2 + 7239^2 .

It is a cyclic number.

It is not a de Polignac number, because 232768021 - 2⁵ = 232767989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232768091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116384010 + 116384011.

It is an arithmetic number, because the mean of its divisors is an integer number (116384011).

Almost surely, 2^232768021 is an apocalyptic number.

It is an amenable number.

232768021 is a deficient number, since it is larger than the sum of its proper divisors (1).

232768021 is an equidigital number, since it uses as much as digits as its factorization.

232768021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 232768021 is about 15256.7369053805. The cubic root of 232768021 is about 615.1406653805.

The spelling of 232768021 in words is "two hundred thirty-two million, seven hundred sixty-eight thousand, twenty-one".