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123313130 = 2527145503
BaseRepresentation
bin1110101100110…
…01101111101010
322121000221210222
413112121233222
5223032010010
620123010042
73025100333
oct726315752
9277027728
10123313130
1163674a86
1235369922
131c716c65
141253d28a
15ac5c355
hex7599bea

123313130 has 16 divisors (see below), whose sum is σ = 222787584. Its totient is φ = 49142160.

The previous prime is 123313129. The next prime is 123313159. The reversal of 123313130 is 31313321.

It is a super-2 number, since 2×1233131302 = 30412256060793800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123313099 and 123313108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20042 + ... + 25461.

It is an arithmetic number, because the mean of its divisors is an integer number (13924224).

Almost surely, 2123313130 is an apocalyptic number.

123313130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123313130 is a deficient number, since it is larger than the sum of its proper divisors (99474454).

123313130 is a wasteful number, since it uses less digits than its factorization.

123313130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45781.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 123313130 is about 11104.6445238017. The cubic root of 123313130 is about 497.7406460169.

Adding to 123313130 its reverse (31313321), we get a palindrome (154626451).

The spelling of 123313130 in words is "one hundred twenty-three million, three hundred thirteen thousand, one hundred thirty".

Divisors: 1 2 5 10 271 542 1355 2710 45503 91006 227515 455030 12331313 24662626 61656565 123313130