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313440217 is a prime number
BaseRepresentation
bin10010101011101…
…011011111011001
3210211210102010221
4102223223133121
51120220041332
651034040041
710524124606
oct2253533731
9724712127
10313440217
11150a24302
1288b79021
134cc254ac
151c7b6297
hex12aeb7d9

313440217 has 2 divisors, whose sum is σ = 313440218. Its totient is φ = 313440216.

The previous prime is 313440187. The next prime is 313440247. The reversal of 313440217 is 712044313.

It is a balanced prime because it is at equal distance from previous prime (313440187) and next prime (313440247).

It can be written as a sum of positive squares in only one way, i.e., 234212416 + 79227801 = 15304^2 + 8901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-313440217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313440191 and 313440200.

It is not a weakly prime, because it can be changed into another prime (313440247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156720108 + 156720109.

It is an arithmetic number, because the mean of its divisors is an integer number (156720109).

Almost surely, 2313440217 is an apocalyptic number.

It is an amenable number.

313440217 is a deficient number, since it is larger than the sum of its proper divisors (1).

313440217 is an equidigital number, since it uses as much as digits as its factorization.

313440217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 313440217 is about 17704.2429095401. The cubic root of 313440217 is about 679.2842938340.

The spelling of 313440217 in words is "three hundred thirteen million, four hundred forty thousand, two hundred seventeen".