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312143153 = 7192980929
BaseRepresentation
bin10010100110101…
…110110100110001
3210202100111220112
4102212232310301
51114402040103
650550151105
710510113230
oct2246566461
9722314815
10312143153
11150218853
1288652495
134c88ccba
142d654b17
151c60bcd8
hex129aed31

312143153 has 16 divisors (see below), whose sum is σ = 388464000. Its totient is φ = 244726272.

The previous prime is 312143147. The next prime is 312143197. The reversal of 312143153 is 351341213.

It is a de Polignac number, because none of the positive numbers 2k-312143153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312143113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36608 + ... + 44321.

It is an arithmetic number, because the mean of its divisors is an integer number (24279000).

Almost surely, 2312143153 is an apocalyptic number.

It is an amenable number.

312143153 is a deficient number, since it is larger than the sum of its proper divisors (76320847).

312143153 is a wasteful number, since it uses less digits than its factorization.

312143153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80984.

The product of its digits is 1080, while the sum is 23.

The square root of 312143153 is about 17667.5734893052. The cubic root of 312143153 is about 678.3460039583.

Adding to 312143153 its reverse (351341213), we get a palindrome (663484366).

The spelling of 312143153 in words is "three hundred twelve million, one hundred forty-three thousand, one hundred fifty-three".

Divisors: 1 7 19 29 133 203 551 3857 80929 566503 1537651 2346941 10763557 16428587 44591879 312143153