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210013131 = 376991033
BaseRepresentation
bin11001000010010…
…00101111001011
3112122011202212010
430201020233023
5412230410011
632501151003
75130040116
oct1441105713
9478152763
10210013131
11a8601a79
125a3bb463
1334681b33
141dc6b57d
15136861a6
hexc848bcb

210013131 has 8 divisors (see below), whose sum is σ = 280384720. Its totient is φ = 139825152.

The previous prime is 210013117. The next prime is 210013159. The reversal of 210013131 is 131310012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210013131 - 211 = 210011083 is a prime.

It is a super-2 number, since 2×2100131312 = 88211030384846322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210013231) 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 7 ways as a sum of consecutive naturals, for example, 43210 + ... + 47823.

It is an arithmetic number, because the mean of its divisors is an integer number (35048090).

Almost surely, 2210013131 is an apocalyptic number.

210013131 is a deficient number, since it is larger than the sum of its proper divisors (70371589).

210013131 is an equidigital number, since it uses as much as digits as its factorization.

210013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91805.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 210013131 is about 14491.8298016503. The cubic root of 210013131 is about 594.4045838497.

Adding to 210013131 its reverse (131310012), we get a palindrome (341323143).

The spelling of 210013131 in words is "two hundred ten million, thirteen thousand, one hundred thirty-one".

Divisors: 1 3 769 2307 91033 273099 70004377 210013131