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213042353 = 2310984979
BaseRepresentation
bin11001011001011…
…00010010110001
3112211212200011112
430230230102301
5414014323403
633050123105
75164554506
oct1454542261
9484780145
10213042353
11aa290967
125b420495
13351a2884
14204194ad
1513a839d8
hexcb2c4b1

213042353 has 8 divisors (see below), whose sum is σ = 224347200. Its totient is φ = 201907728.

The previous prime is 213042331. The next prime is 213042367. The reversal of 213042353 is 353240312.

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 213042353 - 216 = 212976817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213042553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39983 + ... + 44996.

It is an arithmetic number, because the mean of its divisors is an integer number (28043400).

Almost surely, 2213042353 is an apocalyptic number.

213042353 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

213042353 is a deficient number, since it is larger than the sum of its proper divisors (11304847).

213042353 is a wasteful number, since it uses less digits than its factorization.

213042353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85111.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 213042353 is about 14595.9704370761. The cubic root of 213042353 is about 597.2488424640.

Adding to 213042353 its reverse (353240312), we get a palindrome (566282665).

The spelling of 213042353 in words is "two hundred thirteen million, forty-two thousand, three hundred fifty-three".

Divisors: 1 23 109 2507 84979 1954517 9262711 213042353