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210030013 = 683307511
BaseRepresentation
bin11001000010011…
…00110110111101
3112122012122000101
430201030312331
5412231430023
632501401101
75130140254
oct1441146675
9478178011
10210030013
11a8613726
125a409191
133468971b
141dc7379b
151368b1ad
hexc84cdbd

210030013 has 4 divisors (see below), whose sum is σ = 210338208. Its totient is φ = 209721820.

The previous prime is 210030011. The next prime is 210030031. The reversal of 210030013 is 310030012.

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 210030013 - 21 = 210030011 is a prime.

It is a super-2 number, since 2×2100300132 = 88225212721560338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210030011) 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, 153073 + ... + 154438.

It is an arithmetic number, because the mean of its divisors is an integer number (52584552).

Almost surely, 2210030013 is an apocalyptic number.

It is an amenable number.

210030013 is a deficient number, since it is larger than the sum of its proper divisors (308195).

210030013 is an equidigital number, since it uses as much as digits as its factorization.

210030013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308194.

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

The square root of 210030013 is about 14492.4122560739. The cubic root of 210030013 is about 594.4205105829.

Adding to 210030013 its reverse (310030012), we get a palindrome (520060025).

Subtracting 210030013 from its reverse (310030012), we obtain a palindrome (99999999).

The spelling of 210030013 in words is "two hundred ten million, thirty thousand, thirteen".

Divisors: 1 683 307511 210030013