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231070346 = 2138887321
BaseRepresentation
bin11011100010111…
…01101010001010
3121002210120220222
431301131222022
5433123222341
634532350042
75504031323
oct1561355212
9532716828
10231070346
11109484631
1265475322
1338b45520
142298d44a
151544544b
hexdc5da8a

231070346 has 8 divisors (see below), whose sum is σ = 373267524. Its totient is φ = 106647840.

The previous prime is 231070321. The next prime is 231070429. The reversal of 231070346 is 643070132.

It can be written as a sum of positive squares in 2 ways, for example, as 204804721 + 26265625 = 14311^2 + 5125^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 8887321 = 231070346 / (2 + 3 + 1 + 0 + 7 + 0 + 3 + 4 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4443635 + ... + 4443686.

Almost surely, 2231070346 is an apocalyptic number.

231070346 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

231070346 is a deficient number, since it is larger than the sum of its proper divisors (142197178).

231070346 is a wasteful number, since it uses less digits than its factorization.

231070346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8887336.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 231070346 is about 15200.9981909084. The cubic root of 231070346 is about 613.6415216932.

The spelling of 231070346 in words is "two hundred thirty-one million, seventy thousand, three hundred forty-six".

Divisors: 1 2 13 26 8887321 17774642 115535173 231070346