230651209 has 2 divisors, whose sum is σ = 230651210. Its totient is φ = 230651208.

The previous prime is 230651167. The next prime is 230651227. The reversal of 230651209 is 902156032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152275600 + 78375609 = 12340^2 + 8853^2 .

It is a cyclic number.

It is not a de Polignac number, because 230651209 - 2⁹ = 230650697 is a prime.

It is not a weakly prime, because it can be changed into another prime (230651009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115325604 + 115325605.

It is an arithmetic number, because the mean of its divisors is an integer number (115325605).

Almost surely, 2^230651209 is an apocalyptic number.

It is an amenable number.

230651209 is a deficient number, since it is larger than the sum of its proper divisors (1).

230651209 is an equidigital number, since it uses as much as digits as its factorization.

230651209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 230651209 is about 15187.2054374727. The cubic root of 230651209 is about 613.2702703421.

It can be divided in two parts, 230651 and 209, that added together give a triangular number (230860 = T₆₇₉).

The spelling of 230651209 in words is "two hundred thirty million, six hundred fifty-one thousand, two hundred nine".