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230306773 = 1787128879
BaseRepresentation
bin11011011101000…
…11001111010101
3121001100210111111
431232203033111
5432424304043
634504135021
75464401214
oct1556431725
9531323444
10230306773
11109002984
1265167471
1338938ac8
142283107b
151534409d
hexdba33d5

230306773 has 4 divisors (see below), whose sum is σ = 230437440. Its totient is φ = 230176108.

The previous prime is 230306749. The next prime is 230306779. The reversal of 230306773 is 377603032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230306773 - 29 = 230306261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230306779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62653 + ... + 66226.

It is an arithmetic number, because the mean of its divisors is an integer number (57609360).

Almost surely, 2230306773 is an apocalyptic number.

It is an amenable number.

230306773 is a deficient number, since it is larger than the sum of its proper divisors (130667).

230306773 is a wasteful number, since it uses less digits than its factorization.

230306773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130666.

The product of its (nonzero) digits is 15876, while the sum is 31.

The square root of 230306773 is about 15175.8615241442. The cubic root of 230306773 is about 612.9648487304.

The spelling of 230306773 in words is "two hundred thirty million, three hundred six thousand, seven hundred seventy-three".

Divisors: 1 1787 128879 230306773