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230161505 = 576576043
BaseRepresentation
bin11011011011111…
…11110001100001
3121001002102020012
431231333301201
5432410132010
634501054305
75463224540
oct1555776141
9531072205
10230161505
11108a13822
12650b7395
13388b7952
14227d4157
1515316005
hexdb7fc61

230161505 has 8 divisors (see below), whose sum is σ = 315650112. Its totient is φ = 157825008.

The previous prime is 230161501. The next prime is 230161517. The reversal of 230161505 is 505161032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230161505 - 22 = 230161501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230161501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3287987 + ... + 3288056.

It is an arithmetic number, because the mean of its divisors is an integer number (39456264).

Almost surely, 2230161505 is an apocalyptic number.

It is an amenable number.

230161505 is a deficient number, since it is larger than the sum of its proper divisors (85488607).

230161505 is an equidigital number, since it uses as much as digits as its factorization.

230161505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6576055.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 230161505 is about 15171.0746158603. The cubic root of 230161505 is about 612.8359439876.

The spelling of 230161505 in words is "two hundred thirty million, one hundred sixty-one thousand, five hundred five".

Divisors: 1 5 7 35 6576043 32880215 46032301 230161505