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312312230 = 2531231223
BaseRepresentation
bin10010100111011…
…000000110100110
3210202200002211122
4102213120012212
51114422442410
650553533542
710511416166
oct2247300646
9722602748
10312312230
1115032388a
12887142b2
134c91bc49
142d69a5a6
151c641e55
hex129d81a6

312312230 has 8 divisors (see below), whose sum is σ = 562162032. Its totient is φ = 124924888.

The previous prime is 312312167. The next prime is 312312241. The reversal of 312312230 is 32213213.

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

It is a junction number, because it is equal to n+sod(n) for n = 312312199 and 312312208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15615602 + ... + 15615621.

It is an arithmetic number, because the mean of its divisors is an integer number (70270254).

Almost surely, 2312312230 is an apocalyptic number.

312312230 is a deficient number, since it is larger than the sum of its proper divisors (249849802).

312312230 is a wasteful number, since it uses less digits than its factorization.

312312230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31231230.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 312312230 is about 17672.3577940240. The cubic root of 312312230 is about 678.4684605983.

Adding to 312312230 its reverse (32213213), we get a palindrome (344525443).

The spelling of 312312230 in words is "three hundred twelve million, three hundred twelve thousand, two hundred thirty".

Divisors: 1 2 5 10 31231223 62462446 156156115 312312230