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130123111 = 317601683
BaseRepresentation
bin1111100000110…
…00010101100111
3100001211221100111
413300120111213
5231302414421
620524553451
73140012446
oct760302547
9301757314
10130123111
11674a6468
12376b2887
1320c5c831
14133d2d5d
15b654ee1
hex7c18567

130123111 has 8 divisors (see below), whose sum is σ = 130942224. Its totient is φ = 129307200.

The previous prime is 130123099. The next prime is 130123127. The reversal of 130123111 is 111321031.

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

It is a cyclic number.

It is not a de Polignac number, because 130123111 - 25 = 130123079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130123091 and 130123100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130123141) 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, 190176 + ... + 190858.

It is an arithmetic number, because the mean of its divisors is an integer number (16367778).

Almost surely, 2130123111 is an apocalyptic number.

130123111 is a deficient number, since it is larger than the sum of its proper divisors (819113).

130123111 is an equidigital number, since it uses as much as digits as its factorization.

130123111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 130123111 is about 11407.1517479167. The cubic root of 130123111 is about 506.7395630823.

Adding to 130123111 its reverse (111321031), we get a palindrome (241444142).

The spelling of 130123111 in words is "one hundred thirty million, one hundred twenty-three thousand, one hundred eleven".

Divisors: 1 317 601 683 190517 216511 410483 130123111