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681048103 = 1961587617
BaseRepresentation
bin101000100101111…
…111100000100111
31202110111211100211
4220211333200213
52343322014403
6151325120251
722606545661
oct5045774047
91673454324
10681048103
1131a48557a
121700b9087
13ab135058
1466643531
153ebcc06d
hex2897f827

681048103 has 8 divisors (see below), whose sum is σ = 728646320. Its totient is φ = 634625280.

The previous prime is 681048077. The next prime is 681048107. The reversal of 681048103 is 301840186.

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 681048103 - 229 = 144177191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681048107) 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, 292650 + ... + 294967.

It is an arithmetic number, because the mean of its divisors is an integer number (91080790).

Almost surely, 2681048103 is an apocalyptic number.

681048103 is a deficient number, since it is larger than the sum of its proper divisors (47598217).

681048103 is a wasteful number, since it uses less digits than its factorization.

681048103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587697.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 681048103 is about 26096.8983406075. The cubic root of 681048103 is about 879.8174996028.

Adding to 681048103 its reverse (301840186), we get a palindrome (982888289).

The spelling of 681048103 in words is "six hundred eighty-one million, forty-eight thousand, one hundred three".

Divisors: 1 19 61 1159 587617 11164723 35844637 681048103