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1213230104 = 231967119131
BaseRepresentation
bin100100001010000…
…0110110000011000
310010112220110211022
41020110012300120
54441041330404
6320215422012
742031200002
oct11024066030
93115813738
101213230104
11572922809
1229a384908
13164477348
14b71b5372
15717a08be
hex48506c18

1213230104 has 32 divisors (see below), whose sum is σ = 2430292800. Its totient is φ = 566105760.

The previous prime is 1213230103. The next prime is 1213230113. The reversal of 1213230104 is 4010323121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213230101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49382 + ... + 69749.

It is an arithmetic number, because the mean of its divisors is an integer number (75946650).

Almost surely, 21213230104 is an apocalyptic number.

It is an amenable number.

1213230104 is an abundant number, since it is smaller than the sum of its proper divisors (1217062696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213230104 is a wasteful number, since it uses less digits than its factorization.

1213230104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119223 (or 119219 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1213230104 is about 34831.4527977229. The cubic root of 1213230104 is about 1066.5496052959.

Adding to 1213230104 its reverse (4010323121), we get a palindrome (5223553225).

The spelling of 1213230104 in words is "one billion, two hundred thirteen million, two hundred thirty thousand, one hundred four".

Divisors: 1 2 4 8 19 38 67 76 134 152 268 536 1273 2546 5092 10184 119131 238262 476524 953048 2263489 4526978 7981777 9053956 15963554 18107912 31927108 63854216 151653763 303307526 606615052 1213230104