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230393771 = 673438713
BaseRepresentation
bin11011011101110…
…00011110101011
3121001112012211122
431232320132223
5432440100041
634510045455
75465212646
oct1556703653
9531465748
10230393771
11109062283
12651a988b
133896959a
1422854a5d
151535ec4b
hexdbb87ab

230393771 has 4 divisors (see below), whose sum is σ = 233832552. Its totient is φ = 226954992.

The previous prime is 230393749. The next prime is 230393797. The reversal of 230393771 is 177393032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230393771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230393711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719290 + ... + 1719423.

It is an arithmetic number, because the mean of its divisors is an integer number (58458138).

Almost surely, 2230393771 is an apocalyptic number.

230393771 is a deficient number, since it is larger than the sum of its proper divisors (3438781).

230393771 is an equidigital number, since it uses as much as digits as its factorization.

230393771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3438780.

The product of its (nonzero) digits is 23814, while the sum is 35.

The square root of 230393771 is about 15178.7275817178. The cubic root of 230393771 is about 613.0420211643.

The spelling of 230393771 in words is "two hundred thirty million, three hundred ninety-three thousand, seven hundred seventy-one".

Divisors: 1 67 3438713 230393771