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3180514681 = 23138283247
BaseRepresentation
bin1011110110010010…
…1100110101111001
322012122200212221001
42331210230311321
523003202432211
61243333245001
7141546633361
oct27544546571
98178625831
103180514681
111392354833
12749193761
133b8c08766
142225959a1
1513934eac1
hexbd92cd79

3180514681 has 4 divisors (see below), whose sum is σ = 3318797952. Its totient is φ = 3042231412.

The previous prime is 3180514679. The next prime is 3180514691. The reversal of 3180514681 is 1864150813.

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 3180514681 - 21 = 3180514679 is a prime.

It is a super-2 number, since 2×31805146812 = 20231347272113063522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3180514681.

It is not an unprimeable number, because it can be changed into a prime (3180514621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69141601 + ... + 69141646.

It is an arithmetic number, because the mean of its divisors is an integer number (829699488).

Almost surely, 23180514681 is an apocalyptic number.

It is an amenable number.

3180514681 is a deficient number, since it is larger than the sum of its proper divisors (138283271).

3180514681 is a wasteful number, since it uses less digits than its factorization.

3180514681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138283270.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 3180514681 is about 56396.0519983447. The cubic root of 3180514681 is about 1470.6154858559.

The spelling of 3180514681 in words is "three billion, one hundred eighty million, five hundred fourteen thousand, six hundred eighty-one".

Divisors: 1 23 138283247 3180514681