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213130430 = 25471134013
BaseRepresentation
bin11001011010000…
…01110010111110
3112212001010222122
430231001302332
5414030133210
633052042542
75165402342
oct1455016276
9485033878
10213130430
11aa341057
125b463452
13352039a6
142043d622
1513a9eb55
hexcb41cbe

213130430 has 32 divisors (see below), whose sum is σ = 395362944. Its totient is φ = 82679296.

The previous prime is 213130409. The next prime is 213130433. The reversal of 213130430 is 34031312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 213130399 and 213130408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213130433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51104 + ... + 55116.

It is an arithmetic number, because the mean of its divisors is an integer number (12355092).

Almost surely, 2213130430 is an apocalyptic number.

213130430 is a deficient number, since it is larger than the sum of its proper divisors (182232514).

213130430 is a wasteful number, since it uses less digits than its factorization.

213130430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 213130430 is about 14598.9872936447. The cubic root of 213130430 is about 597.3311369592.

Adding to 213130430 its reverse (34031312), we get a palindrome (247161742).

The spelling of 213130430 in words is "two hundred thirteen million, one hundred thirty thousand, four hundred thirty".

Divisors: 1 2 5 10 47 94 113 226 235 470 565 1130 4013 5311 8026 10622 20065 26555 40130 53110 188611 377222 453469 906938 943055 1886110 2267345 4534690 21313043 42626086 106565215 213130430