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315158389 = 71311932903
BaseRepresentation
bin10010110010001…
…110111101110101
3210222000201000221
4102302032331311
51121140032024
651134534341
710544542060
oct2262167565
9728021027
10315158389
11151998187
12896673b1
13503a7570
142dbdb8d7
151ca053e4
hex12c8ef75

315158389 has 16 divisors (see below), whose sum is σ = 388346112. Its totient is φ = 249061248.

The previous prime is 315158357. The next prime is 315158407. The reversal of 315158389 is 983851513.

It is a cyclic number.

It is not a de Polignac number, because 315158389 - 25 = 315158357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315150389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107112 + ... + 110014.

It is an arithmetic number, because the mean of its divisors is an integer number (24271632).

Almost surely, 2315158389 is an apocalyptic number.

It is an amenable number.

315158389 is a deficient number, since it is larger than the sum of its proper divisors (73187723).

315158389 is a wasteful number, since it uses less digits than its factorization.

315158389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116.

The product of its digits is 129600, while the sum is 43.

The square root of 315158389 is about 17752.7008931036. The cubic root of 315158389 is about 680.5232341104.

The spelling of 315158389 in words is "three hundred fifteen million, one hundred fifty-eight thousand, three hundred eighty-nine".

Divisors: 1 7 13 91 1193 2903 8351 15509 20321 37739 108563 264173 3463279 24242953 45022627 315158389