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231002011313 = 298989500973
BaseRepresentation
bin1101011100100011001…
…0101111011010110001
3211002020221001000222122
43113020302233122301
512241043003330223
6254042034444025
722455305461433
oct3271062573261
9732227030878
10231002011313
1189a70682157
123892a133615
1318a25176a78
14b27563c653
15602002a5c8
hex35c8caf6b1

231002011313 has 8 divisors (see below), whose sum is σ = 241652629800. Its totient is φ = 220530395008.

The previous prime is 231002011291. The next prime is 231002011351. The reversal of 231002011313 is 313110200132.

It can be written as a sum of positive squares in 4 ways, for example, as 12442956304 + 218559055009 = 111548^2 + 467503^2 .

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 231002011313 - 214 = 231001994929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231002011291 and 231002011300.

It is not an unprimeable number, because it can be changed into a prime (231002011393) 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, 44747906 + ... + 44753067.

It is an arithmetic number, because the mean of its divisors is an integer number (30206578725).

Almost surely, 2231002011313 is an apocalyptic number.

It is an amenable number.

231002011313 is a deficient number, since it is larger than the sum of its proper divisors (10650618487).

231002011313 is an equidigital number, since it uses as much as digits as its factorization.

231002011313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89501091.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 231002011313 its reverse (313110200132), we get a palindrome (544112211445).

The spelling of 231002011313 in words is "two hundred thirty-one billion, two million, eleven thousand, three hundred thirteen".

Divisors: 1 29 89 2581 89500973 2595528217 7965586597 231002011313