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BaseRepresentation
bin1000000001000001000011
310221202110111
420001001003
51014220230
6113012151
723601166
oct10010103
93852414
102101315
111205827
12854057
135875a8
152b792a
hex201043

2101315 has 4 divisors (see below), whose sum is σ = 2521584. Its totient is φ = 1681048.

The previous prime is 2101313. The next prime is 2101327. The reversal of 2101315 is 5131012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2101315 - 21 = 2101313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101295 and 2101304.

It is not an unprimeable number, because it can be changed into a prime (2101313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210127 + ... + 210136.

It is an arithmetic number, because the mean of its divisors is an integer number (630396).

22101315 is an apocalyptic number.

2101315 is a deficient number, since it is larger than the sum of its proper divisors (420269).

2101315 is an equidigital number, since it uses as much as digits as its factorization.

2101315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420268.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 2101315 is about 1449.5913217180. The cubic root of 2101315 is about 128.0846404707.

Adding to 2101315 its reverse (5131012), we get a palindrome (7232327).

The spelling of 2101315 in words is "two million, one hundred one thousand, three hundred fifteen".

Divisors: 1 5 420263 2101315