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320131222211213 = 7193919614187719
BaseRepresentation
bin100100011001010000101101…
…1110010000000101010001101
31112222111020122022011002201122
41020302201123302000222031
5313430012220341224323
63052510130405450325
7124300501056063230
oct11062413362005215
91488436568132648
10320131222211213
1193004986152aa6
122baa36aa7109a5
131098232486057a
14590a6105d1417
1527025339ceec8
hex123285bc80a8d

320131222211213 has 16 divisors (see below), whose sum is σ = 385218537984000. Its totient is φ = 259889847745392.

The previous prime is 320131222211173. The next prime is 320131222211243. The reversal of 320131222211213 is 312112222131023.

It is a cyclic number.

It is not a de Polignac number, because 320131222211213 - 230 = 320130148469389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320131222211243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306572633 + ... + 307615086.

It is an arithmetic number, because the mean of its divisors is an integer number (24076158624000).

Almost surely, 2320131222211213 is an apocalyptic number.

It is an amenable number.

320131222211213 is a deficient number, since it is larger than the sum of its proper divisors (65087315772787).

320131222211213 is a wasteful number, since it uses less digits than its factorization.

320131222211213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614191664.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 320131222211213 its reverse (312112222131023), we get a palindrome (632243444342236).

The spelling of 320131222211213 in words is "three hundred twenty trillion, one hundred thirty-one billion, two hundred twenty-two million, two hundred eleven thousand, two hundred thirteen".

Divisors: 1 7 19 133 3919 27433 74461 521227 614187719 4299314033 11669566661 81686966627 2407001670761 16849011695327 45733031744459 320131222211213