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230133131 = 1735413823
BaseRepresentation
bin11011011011110…
…00110110001011
3121001000222022022
431231320312023
5432403230011
634500315055
75463046034
oct1555706613
9531028268
10230133131
111089a4478
12650a2a8b
13388a7a67
14227c7a8b
151530c8db
hexdb78d8b

230133131 has 8 divisors (see below), whose sum is σ = 243802944. Its totient is φ = 216478080.

The previous prime is 230133109. The next prime is 230133143. The reversal of 230133131 is 131331032.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230133131 is a prime.

It is a super-2 number, since 2×2301331312 = 105922515967726322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230133151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58286 + ... + 62108.

It is an arithmetic number, because the mean of its divisors is an integer number (30475368).

Almost surely, 2230133131 is an apocalyptic number.

230133131 is a deficient number, since it is larger than the sum of its proper divisors (13669813).

230133131 is a wasteful number, since it uses less digits than its factorization.

230133131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7381.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 230133131 is about 15170.1394522265. The cubic root of 230133131 is about 612.8107597564.

Adding to 230133131 its reverse (131331032), we get a palindrome (361464163).

The spelling of 230133131 in words is "two hundred thirty million, one hundred thirty-three thousand, one hundred thirty-one".

Divisors: 1 17 3541 3823 60197 64991 13537243 230133131