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213405141 = 397733351
BaseRepresentation
bin11001011100001…
…00110111010101
3112212120002211010
430232010313111
5414112431031
633102002433
75200625265
oct1456046725
9485502733
10213405141
11aa509494
125b576419
133529ba41
14204b17a5
1513b06246
hexcb84dd5

213405141 has 8 divisors (see below), whose sum is σ = 287473984. Its totient is φ = 140803200.

The previous prime is 213405121. The next prime is 213405161. The reversal of 213405141 is 141504312.

It is an interprime number because it is at equal distance from previous prime (213405121) and next prime (213405161).

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

It is not a de Polignac number, because 213405141 - 26 = 213405077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213405121) 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, 366385 + ... + 366966.

It is an arithmetic number, because the mean of its divisors is an integer number (35934248).

Almost surely, 2213405141 is an apocalyptic number.

It is an amenable number.

213405141 is a deficient number, since it is larger than the sum of its proper divisors (74068843).

213405141 is an equidigital number, since it uses as much as digits as its factorization.

213405141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733451.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 213405141 is about 14608.3928274126. The cubic root of 213405141 is about 597.5876668575.

Adding to 213405141 its reverse (141504312), we get a palindrome (354909453).

The spelling of 213405141 in words is "two hundred thirteen million, four hundred five thousand, one hundred forty-one".

Divisors: 1 3 97 291 733351 2200053 71135047 213405141