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2213232031 = 731311991163
BaseRepresentation
bin1000001111101011…
…0011110110011111
312201020120211120201
42003322303312133
514013041411111
61003341124331
7105563106343
oct20372636637
95636524521
102213232031
11a36347a8a
125192596a7
132936b536a
1416dd23623
15ce4826c1
hex83eb3d9f

2213232031 has 16 divisors (see below), whose sum is σ = 2273990400. Its totient is φ = 2153511360.

The previous prime is 2213232019. The next prime is 2213232041. The reversal of 2213232031 is 1302323122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2213232031 is a prime.

It is a super-2 number, since 2×22132320312 = 9796792046088769922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213232001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1902456 + ... + 1903618.

It is an arithmetic number, because the mean of its divisors is an integer number (142124400).

Almost surely, 22213232031 is an apocalyptic number.

2213232031 is a deficient number, since it is larger than the sum of its proper divisors (60758369).

2213232031 is a wasteful number, since it uses less digits than its factorization.

2213232031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2213232031 is about 47045.0000637687. Note that the first 4 decimals coincide. The cubic root of 2213232031 is about 1303.1937315054.

Adding to 2213232031 its reverse (1302323122), we get a palindrome (3515555153).

The spelling of 2213232031 in words is "two billion, two hundred thirteen million, two hundred thirty-two thousand, thirty-one".

Divisors: 1 73 131 199 1163 9563 14527 26069 84899 152353 231437 1903037 11121769 16894901 30318247 2213232031