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230356161 = 3273656447
BaseRepresentation
bin11011011101011…
…11010011000001
3121001110022020200
431232233103001
5432432344121
634505155413
75464665210
oct1556572301
9531408220
10230356161
11109036aa2
126518bb69
1338955429
1422845077
1515353a26
hexdbaf4c1

230356161 has 12 divisors (see below), whose sum is σ = 380270592. Its totient is φ = 131632056.

The previous prime is 230356153. The next prime is 230356169. The reversal of 230356161 is 161653032.

It is an interprime number because it is at equal distance from previous prime (230356153) and next prime (230356169).

It is not a de Polignac number, because 230356161 - 23 = 230356153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (230356169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1828161 + ... + 1828286.

It is an arithmetic number, because the mean of its divisors is an integer number (31689216).

Almost surely, 2230356161 is an apocalyptic number.

230356161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

230356161 is a deficient number, since it is larger than the sum of its proper divisors (149914431).

230356161 is a wasteful number, since it uses less digits than its factorization.

230356161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3656460 (or 3656457 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 230356161 is about 15177.4886262517. The cubic root of 230356161 is about 613.0086612272.

The spelling of 230356161 in words is "two hundred thirty million, three hundred fifty-six thousand, one hundred sixty-one".

Divisors: 1 3 7 9 21 63 3656447 10969341 25595129 32908023 76785387 230356161