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230617487 is a prime number
BaseRepresentation
bin11011011111011…
…11000110001111
3121001221120201102
431233233012033
5433014224422
634514533315
75500134122
oct1557570617
9531846642
10230617487
111091a5371
126529723b
1338a17369
14228b23b9
15153a6192
hexdbef18f

230617487 has 2 divisors, whose sum is σ = 230617488. Its totient is φ = 230617486.

The previous prime is 230617433. The next prime is 230617501. The reversal of 230617487 is 784716032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230617487 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 230617487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230617187) 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, 115308743 + 115308744.

It is an arithmetic number, because the mean of its divisors is an integer number (115308744).

Almost surely, 2230617487 is an apocalyptic number.

230617487 is a deficient number, since it is larger than the sum of its proper divisors (1).

230617487 is an equidigital number, since it uses as much as digits as its factorization.

230617487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 230617487 is about 15186.0951860575. The cubic root of 230617487 is about 613.2403814779.

The spelling of 230617487 in words is "two hundred thirty million, six hundred seventeen thousand, four hundred eighty-seven".