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123203201 = 11192832083
BaseRepresentation
bin1110101011111…
…10111010000001
322120211101000112
413111332322001
5223020000301
620120401105
73024132002
oct725767201
9276741015
10123203201
11635aa430
1235316195
131c6a8c04
14125111a9
15ac399bb
hex757ee81

123203201 has 16 divisors (see below), whose sum is σ = 142045440. Its totient is φ = 105682320.

The previous prime is 123203189. The next prime is 123203219. The reversal of 123203201 is 102302321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123203201 - 218 = 122941057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123203251) 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, 58106 + ... + 60188.

It is an arithmetic number, because the mean of its divisors is an integer number (8877840).

Almost surely, 2123203201 is an apocalyptic number.

123203201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123203201 is a deficient number, since it is larger than the sum of its proper divisors (18842239).

123203201 is a wasteful number, since it uses less digits than its factorization.

123203201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 123203201 is about 11099.6937345136. The cubic root of 123203201 is about 497.5926963793.

Adding to 123203201 its reverse (102302321), we get a palindrome (225505522).

The spelling of 123203201 in words is "one hundred twenty-three million, two hundred three thousand, two hundred one".

Divisors: 1 11 19 209 283 2083 3113 5377 22913 39577 59147 435347 589489 6484379 11200291 123203201