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2231013231 = 321913046861
BaseRepresentation
bin1000010011111010…
…1000111101101111
312202111001012210200
42010332220331233
514032114410411
61005214204543
7106200204516
oct20476507557
95674035720
102231013231
11a45392297
125231b3753
1329729c895
1417243167d
15d0ce5e56
hex84fa8f6f

2231013231 has 12 divisors (see below), whose sum is σ = 3392184120. Its totient is φ = 1409060880.

The previous prime is 2231013229. The next prime is 2231013283. The reversal of 2231013231 is 1323101322.

It is not a de Polignac number, because 2231013231 - 21 = 2231013229 is a prime.

It is a super-3 number, since 3×22310132313 (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231063231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6523260 + ... + 6523601.

It is an arithmetic number, because the mean of its divisors is an integer number (282682010).

Almost surely, 22231013231 is an apocalyptic number.

2231013231 is a deficient number, since it is larger than the sum of its proper divisors (1161170889).

2231013231 is a wasteful number, since it uses less digits than its factorization.

2231013231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13046886 (or 13046883 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2231013231 is about 47233.6027738728. The cubic root of 2231013231 is about 1306.6743980421.

Adding to 2231013231 its reverse (1323101322), we get a palindrome (3554114553).

The spelling of 2231013231 in words is "two billion, two hundred thirty-one million, thirteen thousand, two hundred thirty-one".

Divisors: 1 3 9 19 57 171 13046861 39140583 117421749 247890359 743671077 2231013231