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13203001 = 722271187
BaseRepresentation
bin110010010111…
…011000111001
3220211210010001
4302113120321
511334444001
61150553001
7220136500
oct62273071
926753101
1013203001
1174a8679
124508761
132973736
141a79837
15125c001
hexc97639

13203001 has 12 divisors (see below), whose sum is σ = 15439248. Its totient is φ = 11257512.

The previous prime is 13202983. The next prime is 13203011. The reversal of 13203001 is 10030231.

It is a de Polignac number, because none of the positive numbers 2k-13203001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13203011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10530 + ... + 11716.

It is an arithmetic number, because the mean of its divisors is an integer number (1286604).

Almost surely, 213203001 is an apocalyptic number.

It is an amenable number.

13203001 is a deficient number, since it is larger than the sum of its proper divisors (2236247).

13203001 is a wasteful number, since it uses less digits than its factorization.

13203001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1421 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 13203001 is about 3633.5934004784. The cubic root of 13203001 is about 236.3510587309.

Adding to 13203001 its reverse (10030231), we get a palindrome (23233232).

The spelling of 13203001 in words is "thirteen million, two hundred three thousand, one".

Divisors: 1 7 49 227 1187 1589 8309 11123 58163 269449 1886143 13203001