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230572251 = 3571310427
BaseRepresentation
bin11011011111001…
…00000011011011
3121001212021200000
431233210003123
5433011303001
634513544043
75466555210
oct1557440333
9531767600
10230572251
11109174388
1265275023
13389cc8b0
142289db07
1515397a86
hexdbe40db

230572251 has 48 divisors (see below), whose sum is σ = 425128704. Its totient is φ = 121608864.

The previous prime is 230572249. The next prime is 230572273. The reversal of 230572251 is 152275032.

It is not a de Polignac number, because 230572251 - 21 = 230572249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230572231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16900 + ... + 27326.

It is an arithmetic number, because the mean of its divisors is an integer number (8856848).

Almost surely, 2230572251 is an apocalyptic number.

230572251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

230572251 is a deficient number, since it is larger than the sum of its proper divisors (194556453).

230572251 is a wasteful number, since it uses less digits than its factorization.

230572251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10462 (or 10450 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 230572251 is about 15184.6057242195. The cubic root of 230572251 is about 613.2002828189.

The spelling of 230572251 in words is "two hundred thirty million, five hundred seventy-two thousand, two hundred fifty-one".

Divisors: 1 3 7 9 13 21 27 39 63 81 91 117 189 243 273 351 567 819 1053 1701 2457 3159 7371 10427 22113 31281 72989 93843 135551 218967 281529 406653 656901 844587 948857 1219959 1970703 2533761 2846571 3659877 5912109 8539713 10979631 17736327 25619139 32938893 76857417 230572251