Base | Representation |
---|---|
bin | 10010101010100… |
… | …101001010011101 |
3 | 210211020210000001 |
4 | 102222211022131 |
5 | 1120131332112 |
6 | 51023534301 |
7 | 10521515023 |
oct | 2252451235 |
9 | 724223001 |
10 | 313152157 |
11 | 15084793a |
12 | 88a5a391 |
13 | 4cb54346 |
14 | 2d838713 |
15 | 1c75ac57 |
hex | 12aa529d |
313152157 has 2 divisors, whose sum is σ = 313152158. Its totient is φ = 313152156.
The previous prime is 313152131. The next prime is 313152197. The reversal of 313152157 is 751251313.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 295461721 + 17690436 = 17189^2 + 4206^2 .
It is an emirp because it is prime and its reverse (751251313) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 313152157 - 27 = 313152029 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (313152197) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156576078 + 156576079.
It is an arithmetic number, because the mean of its divisors is an integer number (156576079).
Almost surely, 2313152157 is an apocalyptic number.
It is an amenable number.
313152157 is a deficient number, since it is larger than the sum of its proper divisors (1).
313152157 is an equidigital number, since it uses as much as digits as its factorization.
313152157 is an evil number, because the sum of its binary digits is even.
The product of its digits is 3150, while the sum is 28.
The square root of 313152157 is about 17696.1057015378. The cubic root of 313152157 is about 679.0761365342.
The spelling of 313152157 in words is "three hundred thirteen million, one hundred fifty-two thousand, one hundred fifty-seven".
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