230309551 has 2 divisors, whose sum is σ = 230309552. Its totient is φ = 230309550.

The previous prime is 230309543. The next prime is 230309581. The reversal of 230309551 is 155903032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 230309551 - 2³ = 230309543 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 (230309501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115154775 + 115154776.

It is an arithmetic number, because the mean of its divisors is an integer number (115154776).

Almost surely, 2^230309551 is an apocalyptic number.

230309551 is a deficient number, since it is larger than the sum of its proper divisors (1).

230309551 is an equidigital number, since it uses as much as digits as its factorization.

230309551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 230309551 is about 15175.9530507972. The cubic root of 230309551 is about 612.9673132831.

It can be divided in two parts, 230309 and 551, that added together give a triangular number (230860 = T₆₇₉).

The spelling of 230309551 in words is "two hundred thirty million, three hundred nine thousand, five hundred fifty-one".