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315134143 = 3743198073
BaseRepresentation
bin10010110010001…
…001000010111111
3210221222110202221
4102302021002333
51121133243033
651134230211
710544411302
oct2262110277
9727873687
10315134143
11151980a45
1289655367
135039950c
142dbd2b39
151c9ed12d
hex12c890bf

315134143 has 8 divisors (see below), whose sum is σ = 331179728. Its totient is φ = 299484864.

The previous prime is 315134129. The next prime is 315134179. The reversal of 315134143 is 341431513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-315134143 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 (315134243) 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, 97446 + ... + 100627.

It is an arithmetic number, because the mean of its divisors is an integer number (41397466).

Almost surely, 2315134143 is an apocalyptic number.

315134143 is a deficient number, since it is larger than the sum of its proper divisors (16045585).

315134143 is a wasteful number, since it uses less digits than its factorization.

315134143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198153.

The product of its digits is 2160, while the sum is 25.

The square root of 315134143 is about 17752.0179979629. The cubic root of 315134143 is about 680.5057821560.

Adding to 315134143 its reverse (341431513), we get a palindrome (656565656).

The spelling of 315134143 in words is "three hundred fifteen million, one hundred thirty-four thousand, one hundred forty-three".

Divisors: 1 37 43 1591 198073 7328701 8517139 315134143