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30020223231 = 32192389139617
BaseRepresentation
bin11011111101010110…
…000100000011111111
32212111011100100102200
4123331112010003333
5442440134120411
621442513322543
72111633454465
oct337526040377
985434310380
1030020223231
11118056a7049
125999866453
132aa5625ccb
14164add0835
15baa7c0e56
hex6fd5840ff

30020223231 has 96 divisors (see below), whose sum is σ = 48589632000. Its totient is φ = 17774152704.

The previous prime is 30020223203. The next prime is 30020223251. The reversal of 30020223231 is 13232202003.

It is a happy number.

30020223231 is a `hidden beast` number, since 300 + 20 + 22 + 323 + 1 = 666.

It is not a de Polignac number, because 30020223231 - 213 = 30020215039 is a prime.

It is a super-2 number, since 2×300202232312 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30020223251) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 48654835 + ... + 48655451.

It is an arithmetic number, because the mean of its divisors is an integer number (506142000).

Almost surely, 230020223231 is an apocalyptic number.

30020223231 is a deficient number, since it is larger than the sum of its proper divisors (18569408769).

30020223231 is a wasteful number, since it uses less digits than its factorization.

30020223231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 30020223231 its reverse (13232202003), we get a palindrome (43252425234).

The spelling of 30020223231 in words is "thirty billion, twenty million, two hundred twenty-three thousand, two hundred thirty-one".

Divisors: 1 3 9 19 23 57 69 89 139 171 207 267 417 437 617 801 1251 1311 1691 1851 2047 2641 3197 3933 5073 5553 6141 7923 9591 11723 12371 14191 15219 18423 23769 28773 35169 37113 38893 42573 54913 60743 85763 105507 111339 116679 127719 164739 182229 235049 257289 269629 284533 350037 494217 546687 705147 771867 808887 853599 1043347 1262999 1629497 1972549 2115441 2426661 2560797 3130041 3788997 4888491 5406127 5917647 7632907 9390123 11366991 14665473 16218381 17752941 22898721 23996981 37478431 48655143 68696163 71990943 112435293 145025233 175556861 215972829 337305879 435075699 526670583 1305227097 1580011749 3335580359 10006741077 30020223231