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231050642 = 21049110129
BaseRepresentation
bin11011100010110…
…00110110010010
3121002202120220012
431301120312102
5433122110032
634532114522
75503620014
oct1561306622
9532676805
10231050642
11109470849
1265465a42
1338b39574
14229861b4
151543e6b2
hexdc58d92

231050642 has 8 divisors (see below), whose sum is σ = 346909500. Its totient is φ = 115414144.

The previous prime is 231050641. The next prime is 231050647. The reversal of 231050642 is 246050132.

231050642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 225570361 + 5480281 = 15019^2 + 2341^2 .

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

It is a super-2 number, since 2×2310506422 = 106768798337224328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231050641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52967 + ... + 57162.

Almost surely, 2231050642 is an apocalyptic number.

231050642 is a deficient number, since it is larger than the sum of its proper divisors (115858858).

231050642 is a wasteful number, since it uses less digits than its factorization.

231050642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111180.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 231050642 is about 15200.3500617584. The cubic root of 231050642 is about 613.6240789008.

The spelling of 231050642 in words is "two hundred thirty-one million, fifty thousand, six hundred forty-two".

Divisors: 1 2 1049 2098 110129 220258 115525321 231050642