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312125429 = 7112368507
BaseRepresentation
bin10010100110101…
…010011111110101
3210202022121121002
4102212222133311
51114401003204
650545533045
710510010450
oct2246523765
9722277532
10312125429
11150206500
1288644185
134c884c05
142d64c497
151c60691e
hex129aa7f5

312125429 has 12 divisors (see below), whose sum is σ = 392092512. Its totient is φ = 243213960.

The previous prime is 312125393. The next prime is 312125441. The reversal of 312125429 is 924521213.

It is not a de Polignac number, because 312125429 - 220 = 311076853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312125029) 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 11 ways as a sum of consecutive naturals, for example, 183407 + ... + 185100.

It is an arithmetic number, because the mean of its divisors is an integer number (32674376).

Almost surely, 2312125429 is an apocalyptic number.

It is an amenable number.

312125429 is a deficient number, since it is larger than the sum of its proper divisors (79967083).

312125429 is a wasteful number, since it uses less digits than its factorization.

312125429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368536 (or 368525 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 312125429 is about 17667.0718852899. The cubic root of 312125429 is about 678.3331645158. Note that the first 3 decimals are identical.

The spelling of 312125429 in words is "three hundred twelve million, one hundred twenty-five thousand, four hundred twenty-nine".

Divisors: 1 7 11 77 121 847 368507 2579549 4053577 28375039 44589347 312125429