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123317113 = 479257447
BaseRepresentation
bin1110101100110…
…10101101111001
322121001011021111
413112122231321
5223032121423
620123040321
73025115053
oct726325571
9277034244
10123317113
1163677a77
12353700a1
131c718a0a
14125408d3
15ac5d60d
hex759ab79

123317113 has 4 divisors (see below), whose sum is σ = 123575040. Its totient is φ = 123059188.

The previous prime is 123317111. The next prime is 123317119. The reversal of 123317113 is 311713321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123317113 - 21 = 123317111 is a prime.

It is a super-2 number, since 2×1233171132 = 30414220717309538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123317111) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 128245 + ... + 129202.

It is an arithmetic number, because the mean of its divisors is an integer number (30893760).

Almost surely, 2123317113 is an apocalyptic number.

It is an amenable number.

123317113 is a deficient number, since it is larger than the sum of its proper divisors (257927).

123317113 is an equidigital number, since it uses as much as digits as its factorization.

123317113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257926.

The product of its digits is 378, while the sum is 22.

The square root of 123317113 is about 11104.8238617278. The cubic root of 123317113 is about 497.7460049478.

The spelling of 123317113 in words is "one hundred twenty-three million, three hundred seventeen thousand, one hundred thirteen".

Divisors: 1 479 257447 123317113