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1230212113 = 13631149971
BaseRepresentation
bin100100101010011…
…1000110000010001
310011201212020202121
41021110320300101
510004413241423
6322023414241
742325426144
oct11124706021
93151766677
101230212113
11581471629
122a3bb4381
13167b41b80
14b955605b
157300745d
hex49538c11

1230212113 has 8 divisors (see below), whose sum is σ = 1326952256. Its totient is φ = 1133773200.

The previous prime is 1230212107. The next prime is 1230212131. The reversal of 1230212113 is 3112120321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1230212113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230212173) 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, 66783 + ... + 83188.

It is an arithmetic number, because the mean of its divisors is an integer number (165869032).

Almost surely, 21230212113 is an apocalyptic number.

1230212113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1230212113 is a deficient number, since it is larger than the sum of its proper divisors (96740143).

1230212113 is a wasteful number, since it uses less digits than its factorization.

1230212113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150615.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1230212113 is about 35074.3797236672. The cubic root of 1230212113 is about 1071.5028560212.

Adding to 1230212113 its reverse (3112120321), we get a palindrome (4342332434).

The spelling of 1230212113 in words is "one billion, two hundred thirty million, two hundred twelve thousand, one hundred thirteen".

Divisors: 1 13 631 8203 149971 1949623 94631701 1230212113