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231023220000001 = 111323115061610469
BaseRepresentation
bin110100100001110101001000…
…111101101000010100000001
31010021222121022102021110101121
4310201311020331220110001
5220240041023310000001
62135202334020232241
766442606520346052
oct6441651075502401
91107877272243347
10231023220000001
116767a440a21a40
1221ab1a20b3b681
139bba51c4c3520
144109825212729
151ba969dd996a1
hexd21d48f68501

231023220000001 has 32 divisors (see below), whose sum is σ = 283215337332480. Its totient is φ = 185434782931200.

The previous prime is 231023219999981. The next prime is 231023220000019. The reversal of 231023220000001 is 100000022320132.

It is not a de Polignac number, because 231023220000001 - 223 = 231023211611393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231023220000001.

It is not an unprimeable number, because it can be changed into a prime (231023220000701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378130395 + ... + 378740863.

It is an arithmetic number, because the mean of its divisors is an integer number (8850479291640).

Almost surely, 2231023220000001 is an apocalyptic number.

It is an amenable number.

231023220000001 is a deficient number, since it is larger than the sum of its proper divisors (52192117332479).

231023220000001 is a wasteful number, since it uses less digits than its factorization.

231023220000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725577.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 231023220000001 its reverse (100000022320132), we get a palindrome (331023242320133).

The spelling of 231023220000001 in words is "two hundred thirty-one trillion, twenty-three billion, two hundred twenty million, one", and thus it is an aban number.

Divisors: 1 11 13 23 143 253 299 3289 115061 610469 1265671 1495793 2646403 6715159 7936097 14040787 16453723 29110433 34403239 87297067 154448657 182530231 378435629 2007832541 70241173609 772652909699 913135256917 1615546993007 10044487826087 17771016923077 21002110909091 231023220000001