232145993 has 2 divisors, whose sum is σ = 232145994. Its totient is φ = 232145992.

The previous prime is 232145983. The next prime is 232146001. The reversal of 232145993 is 399541232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219839929 + 12306064 = 14827^2 + 3508^2 .

It is a cyclic number.

It is not a de Polignac number, because 232145993 - 2¹⁸ = 231883849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (232145983) 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, 116072996 + 116072997.

It is an arithmetic number, because the mean of its divisors is an integer number (116072997).

Almost surely, 2^232145993 is an apocalyptic number.

It is an amenable number.

232145993 is a deficient number, since it is larger than the sum of its proper divisors (1).

232145993 is an equidigital number, since it uses as much as digits as its factorization.

232145993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 38.

The square root of 232145993 is about 15236.3379130288. The cubic root of 232145993 is about 614.5922279815.

The spelling of 232145993 in words is "two hundred thirty-two million, one hundred forty-five thousand, nine hundred ninety-three".