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213383805 = 3514225587
BaseRepresentation
bin11001011011111…
…11101001111101
3112212112000112220
430231333221331
5414111240210
633101315553
75200506135
oct1455775175
9485460486
10213383805
11aa4a4458
125b565bb9
133529210b
14204a7ac5
1513aeec70
hexcb7fa7d

213383805 has 8 divisors (see below), whose sum is σ = 341414112. Its totient is φ = 113804688.

The previous prime is 213383743. The next prime is 213383809. The reversal of 213383805 is 508383312.

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

It is not a de Polignac number, because 213383805 - 28 = 213383549 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213383809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7112779 + ... + 7112808.

It is an arithmetic number, because the mean of its divisors is an integer number (42676764).

Almost surely, 2213383805 is an apocalyptic number.

It is an amenable number.

213383805 is a deficient number, since it is larger than the sum of its proper divisors (128030307).

213383805 is a wasteful number, since it uses less digits than its factorization.

213383805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14225595.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 213383805 is about 14607.6625440212. The cubic root of 213383805 is about 597.5677508184.

The spelling of 213383805 in words is "two hundred thirteen million, three hundred eighty-three thousand, eight hundred five".

Divisors: 1 3 5 15 14225587 42676761 71127935 213383805