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312701140 = 22515635057
BaseRepresentation
bin10010101000110…
…111000011010100
3210210101212022201
4102220313003110
51120022414030
651010134244
710514626063
oct2250670324
9723355281
10312701140
11150569aa4
1288881384
134ca26c7b
142d75c1da
151c6bc2ca
hex12a370d4

312701140 has 12 divisors (see below), whose sum is σ = 656672436. Its totient is φ = 125080448.

The previous prime is 312701101. The next prime is 312701141. The reversal of 312701140 is 41107213.

It can be written as a sum of positive squares in 2 ways, for example, as 166823056 + 145878084 = 12916^2 + 12078^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312701141) by changing a digit.

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, 7817509 + ... + 7817548.

It is an arithmetic number, because the mean of its divisors is an integer number (54722703).

Almost surely, 2312701140 is an apocalyptic number.

It is an amenable number.

312701140 is an abundant number, since it is smaller than the sum of its proper divisors (343971296).

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

312701140 is a wasteful number, since it uses less digits than its factorization.

312701140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15635066 (or 15635064 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 312701140 is about 17683.3577128327. The cubic root of 312701140 is about 678.7499670453.

Adding to 312701140 its reverse (41107213), we get a palindrome (353808353).

The spelling of 312701140 in words is "three hundred twelve million, seven hundred one thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 15635057 31270114 62540228 78175285 156350570 312701140