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213030131 = 1915771933
BaseRepresentation
bin11001011001010…
…01010011110011
3112211212001101212
430230221103303
5414013431011
633045550335
75164504046
oct1454512363
9484761355
10213030131
11aa282766
125b4153ab
133519a142
1420414c5d
1513a8008b
hexcb294f3

213030131 has 8 divisors (see below), whose sum is σ = 214627584. Its totient is φ = 211438080.

The previous prime is 213030121. The next prime is 213030151. The reversal of 213030131 is 131030312.

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 213030131 - 26 = 213030067 is a prime.

It is a super-2 number, since 2×2130301312 = 90763673427754322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213030121) 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, 109241 + ... + 111173.

It is an arithmetic number, because the mean of its divisors is an integer number (26828448).

Almost surely, 2213030131 is an apocalyptic number.

213030131 is a deficient number, since it is larger than the sum of its proper divisors (1597453).

213030131 is a wasteful number, since it uses less digits than its factorization.

213030131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 213030131 is about 14595.5517538735. The cubic root of 213030131 is about 597.2374210810.

Adding to 213030131 its reverse (131030312), we get a palindrome (344060443).

The spelling of 213030131 in words is "two hundred thirteen million, thirty thousand, one hundred thirty-one".

Divisors: 1 191 577 1933 110207 369203 1115341 213030131