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230453143 = 778929587
BaseRepresentation
bin11011011110001…
…10111110010111
3121001122020021121
431233012332113
5432444000033
634511224411
75465551024
oct1557067627
9531566247
10230453143
111090a2948
1265218107
133898a60b
142286c54b
151537262d
hexdbc6f97

230453143 has 4 divisors (see below), whose sum is σ = 230490520. Its totient is φ = 230415768.

The previous prime is 230453137. The next prime is 230453159. The reversal of 230453143 is 341354032.

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

It is a cyclic number.

It is not a de Polignac number, because 230453143 - 29 = 230452631 is a prime.

It is a super-2 number, since 2×2304531432 = 106217302237156898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230456143) 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 in 3 ways as a sum of consecutive naturals, for example, 7005 + ... + 22582.

It is an arithmetic number, because the mean of its divisors is an integer number (57622630).

Almost surely, 2230453143 is an apocalyptic number.

230453143 is a deficient number, since it is larger than the sum of its proper divisors (37377).

230453143 is an equidigital number, since it uses as much as digits as its factorization.

230453143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37376.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 230453143 is about 15180.6832191440. The cubic root of 230453143 is about 613.0946765300.

The spelling of 230453143 in words is "two hundred thirty million, four hundred fifty-three thousand, one hundred forty-three".

Divisors: 1 7789 29587 230453143