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213135361 = 449479991
BaseRepresentation
bin11001011010000…
…11000000000001
3112212001101202021
430231003000001
5414030312421
633052121441
75165422615
oct1455030001
9485041667
10213135361
11aa34482a
125b466281
1335205cca
1420441345
1513aa1341
hexcb43001

213135361 has 8 divisors (see below), whose sum is σ = 214272000. Its totient is φ = 212002560.

The previous prime is 213135353. The next prime is 213135367. The reversal of 213135361 is 163531312.

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

It is a cyclic number.

It is not a de Polignac number, because 213135361 - 23 = 213135353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213135367) 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, 214576 + ... + 215566.

It is an arithmetic number, because the mean of its divisors is an integer number (26784000).

Almost surely, 2213135361 is an apocalyptic number.

It is an amenable number.

213135361 is a deficient number, since it is larger than the sum of its proper divisors (1136639).

213135361 is an equidigital number, since it uses as much as digits as its factorization.

213135361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919.

The product of its digits is 1620, while the sum is 25.

The square root of 213135361 is about 14599.1561742451. The cubic root of 213135361 is about 597.3357435549.

Adding to 213135361 its reverse (163531312), we get a palindrome (376666673).

The spelling of 213135361 in words is "two hundred thirteen million, one hundred thirty-five thousand, three hundred sixty-one".

Divisors: 1 449 479 991 215071 444959 474689 213135361