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1312030223 = 7323316417
BaseRepresentation
bin100111000110011…
…1111111000001111
310101102211001002222
41032030333320033
510141334431343
6334105205555
744341034000
oct11614777017
93342731088
101312030223
116136747a9
123074908bb
1317ba8a95a
14c63731a7
157a2b9a68
hex4e33fe0f

1312030223 has 16 divisors (see below), whose sum is σ = 1536724800. Its totient is φ = 1119702528.

The previous prime is 1312030201. The next prime is 1312030243. The reversal of 1312030223 is 3220302131.

It is not a de Polignac number, because 1312030223 - 28 = 1312029967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312030243) 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 15 ways as a sum of consecutive naturals, for example, 71711 + ... + 88127.

It is an arithmetic number, because the mean of its divisors is an integer number (96045300).

Almost surely, 21312030223 is an apocalyptic number.

1312030223 is a deficient number, since it is larger than the sum of its proper divisors (224694577).

1312030223 is an equidigital number, since it uses as much as digits as its factorization.

1312030223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16671 (or 16657 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1312030223 is about 36221.9577466486. The cubic root of 1312030223 is about 1094.7491409798.

Adding to 1312030223 its reverse (3220302131), we get a palindrome (4532332354).

The spelling of 1312030223 in words is "one billion, three hundred twelve million, thirty thousand, two hundred twenty-three".

Divisors: 1 7 49 233 343 1631 11417 16417 79919 114919 804433 3825161 5631031 26776127 187432889 1312030223