Search a number
-
+
315032201 = 1128639291
BaseRepresentation
bin10010110001110…
…000001010001001
3210221210021221022
4102301300022021
51121122012301
651132122225
710543505141
oct2261601211
9727707838
10315032201
111519113a0
1289606375
1350361cb3
142dba7921
151c9ccd1b
hex12c70289

315032201 has 4 divisors (see below), whose sum is σ = 343671504. Its totient is φ = 286392900.

The previous prime is 315032177. The next prime is 315032203. The reversal of 315032201 is 102230513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-315032201 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 315032201.

It is not an unprimeable number, because it can be changed into a prime (315032203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14319635 + ... + 14319656.

It is an arithmetic number, because the mean of its divisors is an integer number (85917876).

Almost surely, 2315032201 is an apocalyptic number.

It is an amenable number.

315032201 is a deficient number, since it is larger than the sum of its proper divisors (28639303).

315032201 is a wasteful number, since it uses less digits than its factorization.

315032201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28639302.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 315032201 is about 17749.1464865215. The cubic root of 315032201 is about 680.4323958392.

Adding to 315032201 its reverse (102230513), we get a palindrome (417262714).

The spelling of 315032201 in words is "three hundred fifteen million, thirty-two thousand, two hundred one".

Divisors: 1 11 28639291 315032201