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312033020 = 2251310631129
BaseRepresentation
bin10010100110010…
…011111011111100
3210202010220211112
4102212103323330
51114340024040
650543541152
710506144155
oct2246237374
9722126745
10312033020
11150153032
12885ba7b8
134c851b30
142d62692c
151c5d9365
hex12993efc

312033020 has 48 divisors (see below), whose sum is σ = 706964160. Its totient is φ = 115001856.

The previous prime is 312033017. The next prime is 312033037. The reversal of 312033020 is 20330213.

It is a junction number, because it is equal to n+sod(n) for n = 312032986 and 312033004.

It is a congruent number.

It is an unprimeable number.

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, 275816 + ... + 276944.

It is an arithmetic number, because the mean of its divisors is an integer number (14728420).

Almost surely, 2312033020 is an apocalyptic number.

It is an amenable number.

312033020 is an abundant number, since it is smaller than the sum of its proper divisors (394931140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312033020 is a wasteful number, since it uses less digits than its factorization.

312033020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214 (or 2212 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 312033020 is about 17664.4564026182. The cubic root of 312033020 is about 678.2662146395.

Adding to 312033020 its reverse (20330213), we get a palindrome (332363233).

The spelling of 312033020 in words is "three hundred twelve million, thirty-three thousand, twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 1063 1129 2126 2258 4252 4516 5315 5645 10630 11290 13819 14677 21260 22580 27638 29354 55276 58708 69095 73385 138190 146770 276380 293540 1200127 2400254 4800508 6000635 12001270 15601651 24002540 31203302 62406604 78008255 156016510 312033020