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130194231 = 3371172921
BaseRepresentation
bin1111100001010…
…01101100110111
3100001222112220120
413300221230313
5231312203411
620530303023
73140430006
oct760515467
9301875816
10130194231
1167544942
1237727a73
1320c8600b
1413410c3d
15b66b106
hex7c29b37

130194231 has 8 divisors (see below), whose sum is σ = 178284144. Its totient is φ = 84450240.

The previous prime is 130194227. The next prime is 130194269. The reversal of 130194231 is 132491031.

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

It is not a de Polignac number, because 130194231 - 22 = 130194227 is a prime.

It is a super-2 number, since 2×1301942312 = 33901075571362722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130194271) 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, 586350 + ... + 586571.

It is an arithmetic number, because the mean of its divisors is an integer number (22285518).

Almost surely, 2130194231 is an apocalyptic number.

130194231 is a deficient number, since it is larger than the sum of its proper divisors (48089913).

130194231 is a wasteful number, since it uses less digits than its factorization.

130194231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172961.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 130194231 is about 11410.2686646722. The cubic root of 130194231 is about 506.8318673460.

The spelling of 130194231 in words is "one hundred thirty million, one hundred ninety-four thousand, two hundred thirty-one".

Divisors: 1 3 37 111 1172921 3518763 43398077 130194231