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10001312231 = 79145986771
BaseRepresentation
bin10010101000001111…
…11110100111100111
3221211000020022011112
421110013332213213
5130440313442411
64332230455235
7502561515461
oct112407764747
927730208145
1010001312231
1142725309a9
121b3150451b
13c35059841
146ac3c5131
153d806bb8b
hex2541fe9e7

10001312231 has 8 divisors (see below), whose sum is σ = 10134969600. Its totient is φ = 9867831480.

The previous prime is 10001312213. The next prime is 10001312267. The reversal of 10001312231 is 13221310001.

10001312231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 10001312231 - 210 = 10001311207 is a prime.

It is a super-2 number, since 2×100013122312 (a number of 21 digits) 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 (10001312201) 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, 71876 + ... + 158646.

It is an arithmetic number, because the mean of its divisors is an integer number (1266871200).

Almost surely, 210001312231 is an apocalyptic number.

10001312231 is a deficient number, since it is larger than the sum of its proper divisors (133657369).

10001312231 is an equidigital number, since it uses as much as digits as its factorization.

10001312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88309.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 10001312231 its reverse (13221310001), we get a palindrome (23222622232).

The spelling of 10001312231 in words is "ten billion, one million, three hundred twelve thousand, two hundred thirty-one".

Divisors: 1 79 1459 86771 115261 6854909 126598889 10001312231