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130023243 = 3272063861
BaseRepresentation
bin1111011111111…
…11111101001011
3100001122212100200
413233333331023
5231241220433
620522503243
73136115340
oct757777513
9301585320
10130023243
1167438429
1237664b23
1320c2623c
14133a87c7
15b635613
hex7bfff4b

130023243 has 12 divisors (see below), whose sum is σ = 214641648. Its totient is φ = 74298960.

The previous prime is 130023233. The next prime is 130023247. The reversal of 130023243 is 342320031.

It is not a de Polignac number, because 130023243 - 24 = 130023227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130023247) 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, 1031868 + ... + 1031993.

It is an arithmetic number, because the mean of its divisors is an integer number (17886804).

Almost surely, 2130023243 is an apocalyptic number.

130023243 is a deficient number, since it is larger than the sum of its proper divisors (84618405).

130023243 is a wasteful number, since it uses less digits than its factorization.

130023243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063874 (or 2063871 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 130023243 is about 11402.7734784130. The cubic root of 130023243 is about 506.6098909623.

Adding to 130023243 its reverse (342320031), we get a palindrome (472343274).

The spelling of 130023243 in words is "one hundred thirty million, twenty-three thousand, two hundred forty-three".

Divisors: 1 3 7 9 21 63 2063861 6191583 14447027 18574749 43341081 130023243