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315154141 = 555756713
BaseRepresentation
bin10010110010001…
…101111011011101
3210222000111012121
4102302031323131
51121134413031
651134502541
710544523511
oct2262157335
9728014177
10315154141
11151994a75
1289664a51
13503a5653
142dbda141
151ca04011
hex12c8dedd

315154141 has 4 divisors (see below), whose sum is σ = 315216412. Its totient is φ = 315091872.

The previous prime is 315154127. The next prime is 315154157. The reversal of 315154141 is 141451513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141451513 = 720207359.

It can be written as a sum of positive squares in 2 ways, for example, as 260822500 + 54331641 = 16150^2 + 7371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-315154141 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 (315154171) 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 3 ways as a sum of consecutive naturals, for example, 22800 + ... + 33913.

It is an arithmetic number, because the mean of its divisors is an integer number (78804103).

Almost surely, 2315154141 is an apocalyptic number.

It is an amenable number.

315154141 is a deficient number, since it is larger than the sum of its proper divisors (62271).

315154141 is an equidigital number, since it uses as much as digits as its factorization.

315154141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62270.

The product of its digits is 1200, while the sum is 25.

The square root of 315154141 is about 17752.5812489339. The cubic root of 315154141 is about 680.5201765201.

The spelling of 315154141 in words is "three hundred fifteen million, one hundred fifty-four thousand, one hundred forty-one".

Divisors: 1 5557 56713 315154141