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103147979 = 1119493531
BaseRepresentation
bin1100010010111…
…10100111001011
321012002110102112
412021132213023
5202401213404
614122452535
72361512654
oct611364713
9235073375
10103147979
1153251670
122a66414b
13184a660c
14d9b052b
1590c756e
hex625e9cb

103147979 has 8 divisors (see below), whose sum is σ = 118447680. Its totient is φ = 88835400.

The previous prime is 103147969. The next prime is 103147987. The reversal of 103147979 is 979741301.

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 103147979 - 224 = 86370763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103147909) 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, 246557 + ... + 246974.

It is an arithmetic number, because the mean of its divisors is an integer number (14805960).

Almost surely, 2103147979 is an apocalyptic number.

103147979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

103147979 is a deficient number, since it is larger than the sum of its proper divisors (15299701).

103147979 is a wasteful number, since it uses less digits than its factorization.

103147979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493561.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 103147979 is about 10156.1793505235. The cubic root of 103147979 is about 468.9791923581.

The spelling of 103147979 in words is "one hundred three million, one hundred forty-seven thousand, nine hundred seventy-nine".

Divisors: 1 11 19 209 493531 5428841 9377089 103147979