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231010211332231 = 1939831985361333
BaseRepresentation
bin110100100001101001000001…
…100101100000000010000111
31010021221100201211011122222121
4310201221001211200002013
5220234332403100112411
62135152343115310411
766441636250451002
oct6441510145400207
91107840654148877
10231010211332231
1167674975967341
1221aab3b044b407
139bb92283a8486
144108d4d66c539
151ba918bcd4571
hexd21a41960087

231010211332231 has 16 divisors (see below), whose sum is σ = 232458876651456. Its totient is φ = 229564172630016.

The previous prime is 231010211332213. The next prime is 231010211332261. The reversal of 231010211332231 is 132233112010132.

It is a cyclic number.

It is not a de Polignac number, because 231010211332231 - 221 = 231010209235079 is a prime.

It is a super-2 number, since 2×2310102113322312 (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231010211332196 and 231010211332205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231010211332261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3766460641 + ... + 3766521973.

It is an arithmetic number, because the mean of its divisors is an integer number (14528679790716).

Almost surely, 2231010211332231 is an apocalyptic number.

231010211332231 is a deficient number, since it is larger than the sum of its proper divisors (1448665319225).

231010211332231 is a wasteful number, since it uses less digits than its factorization.

231010211332231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82362.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 231010211332231 its reverse (132233112010132), we get a palindrome (363243323342363).

The spelling of 231010211332231 in words is "two hundred thirty-one trillion, ten billion, two hundred eleven million, three hundred thirty-two thousand, two hundred thirty-one".

Divisors: 1 193 983 19853 61333 189719 3831629 11837269 19515499 60290339 1217644049 3766491307 11636035427 235005301457 1196944100167 231010211332231