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213130203 = 311132631889
BaseRepresentation
bin11001011010000…
…01101111011011
3112212001010200020
430231001233123
5414030131303
633052041523
75165401566
oct1455015733
9485033606
10213130203
11aa340970
125b4632a3
1335203860
142043d4dd
1513a9ea53
hexcb41bdb

213130203 has 32 divisors (see below), whose sum is σ = 335301120. Its totient is φ = 118717440.

The previous prime is 213130199. The next prime is 213130219. The reversal of 213130203 is 302031312.

It is not a de Polignac number, because 213130203 - 22 = 213130199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213130103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111883 + ... + 113771.

It is an arithmetic number, because the mean of its divisors is an integer number (10478160).

Almost surely, 2213130203 is an apocalyptic number.

213130203 is a deficient number, since it is larger than the sum of its proper divisors (122170917).

213130203 is a wasteful number, since it uses less digits than its factorization.

213130203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 213130203 is about 14598.9795191308. The cubic root of 213130203 is about 597.3309248916.

Adding to 213130203 its reverse (302031312), we get a palindrome (515161515).

The spelling of 213130203 in words is "two hundred thirteen million, one hundred thirty thousand, two hundred three".

Divisors: 1 3 11 13 33 39 143 263 429 789 1889 2893 3419 5667 8679 10257 20779 24557 37609 62337 73671 112827 270127 496807 810381 1490421 5464877 6458491 16394631 19375473 71043401 213130203