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1315330513 = 7283663973
BaseRepresentation
bin100111001100110…
…0101100111010001
310101200000201020221
41032121211213101
510143211034023
6334304033041
744411060560
oct11631454721
93350021227
101315330513
11615519312
12308602781
1317c674ba3
14c6991bd7
157a71c85d
hex4e6659d1

1315330513 has 8 divisors (see below), whose sum is σ = 1508548928. Its totient is φ = 1123440624.

The previous prime is 1315330481. The next prime is 1315330517. The reversal of 1315330513 is 3150335131.

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 1315330513 - 25 = 1315330481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315330517) 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, 330006 + ... + 333967.

It is an arithmetic number, because the mean of its divisors is an integer number (188568616).

Almost surely, 21315330513 is an apocalyptic number.

It is an amenable number.

1315330513 is a deficient number, since it is larger than the sum of its proper divisors (193218415).

1315330513 is an equidigital number, since it uses as much as digits as its factorization.

1315330513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664263.

The product of its (nonzero) digits is 2025, while the sum is 25.

The square root of 1315330513 is about 36267.4856172854. The cubic root of 1315330513 is about 1095.6662856273. Note that the first 3 decimals are identical.

Adding to 1315330513 its reverse (3150335131), we get a palindrome (4465665644).

The spelling of 1315330513 in words is "one billion, three hundred fifteen million, three hundred thirty thousand, five hundred thirteen".

Divisors: 1 7 283 1981 663973 4647811 187904359 1315330513