Search a number
-
+
315105001 = 2819111779
BaseRepresentation
bin10010110010000…
…001111011101001
3210221220222210121
4102302001323221
51121131330001
651133443241
710544230321
oct2262017351
9727828717
10315105001
11151961062
1289640521
1350389183
142dbc6281
151c9e46a1
hex12c81ee9

315105001 has 4 divisors (see below), whose sum is σ = 315219600. Its totient is φ = 314990404.

The previous prime is 315104969. The next prime is 315105019. The reversal of 315105001 is 100501513.

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 not a de Polignac number, because 315105001 - 25 = 315104969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315105031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53071 + ... + 58708.

It is an arithmetic number, because the mean of its divisors is an integer number (78804900).

Almost surely, 2315105001 is an apocalyptic number.

It is an amenable number.

315105001 is a deficient number, since it is larger than the sum of its proper divisors (114599).

315105001 is a wasteful number, since it uses less digits than its factorization.

315105001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114598.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 315105001 is about 17751.1971708953. The cubic root of 315105001 is about 680.4848049401.

Adding to 315105001 its reverse (100501513), we get a palindrome (415606514).

The spelling of 315105001 in words is "three hundred fifteen million, one hundred five thousand, one".

Divisors: 1 2819 111779 315105001