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315117013 = 679748487
BaseRepresentation
bin10010110010000…
…100110111010101
3210221221121021111
4102302010313111
51121132221023
651134015021
710544310331
oct2262046725
9727847244
10315117013
1115196a092
1289647471
1350391793
142dbca7c1
151c9e800d
hex12c84dd5

315117013 has 8 divisors (see below), whose sum is σ = 323124032. Its totient is φ = 307207296.

The previous prime is 315116969. The next prime is 315117037. The reversal of 315117013 is 310711513.

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 315117013 - 217 = 314985941 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 (315117073) 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, 17745 + ... + 30742.

It is an arithmetic number, because the mean of its divisors is an integer number (40390504).

Almost surely, 2315117013 is an apocalyptic number.

It is an amenable number.

315117013 is a deficient number, since it is larger than the sum of its proper divisors (8007019).

315117013 is an equidigital number, since it uses as much as digits as its factorization.

315117013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48651.

The product of its (nonzero) digits is 315, while the sum is 22.

The square root of 315117013 is about 17751.5355110481. The cubic root of 315117013 is about 680.4934516659.

Adding to 315117013 its reverse (310711513), we get a palindrome (625828526).

It can be divided in two parts, 3151 and 17013, that added together give a square (20164 = 1422).

The spelling of 315117013 in words is "three hundred fifteen million, one hundred seventeen thousand, thirteen".

Divisors: 1 67 97 6499 48487 3248629 4703239 315117013