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310430242221 = 31160715497491
BaseRepresentation
bin1001000010001110001…
…01011001010110101101
31002200021102021020020120
410201013011121112231
520041230120222341
6354335405235153
731266515343651
oct4410705312655
91080242236216
10310430242221
1110a71a8626a0
12501b6562ab9
13233729b8978
141104c49ca61
15811d206066
hex48471595ad

310430242221 has 16 divisors (see below), whose sum is σ = 452278806528. Its totient is φ = 187829578800.

The previous prime is 310430242147. The next prime is 310430242229. The reversal of 310430242221 is 122242034013.

It is a happy number.

It is not a de Polignac number, because 310430242221 - 222 = 310426047917 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 310430242191 and 310430242200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310430242229) 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, 7728715 + ... + 7768776.

It is an arithmetic number, because the mean of its divisors is an integer number (28267425408).

Almost surely, 2310430242221 is an apocalyptic number.

It is an amenable number.

310430242221 is a deficient number, since it is larger than the sum of its proper divisors (141848564307).

310430242221 is a wasteful number, since it uses less digits than its factorization.

310430242221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15498112.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 310430242221 its reverse (122242034013), we get a palindrome (432672276234).

The spelling of 310430242221 in words is "three hundred ten billion, four hundred thirty million, two hundred forty-two thousand, two hundred twenty-one".

Divisors: 1 3 11 33 607 1821 6677 20031 15497491 46492473 170472401 511417203 9406977037 28220931111 103476747407 310430242221