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1230300221 = 3974097577
BaseRepresentation
bin100100101010100…
…1110010000111101
310011202000201121212
41021111032100331
510004424101341
6322025334205
742326244053
oct11125162075
93152021555
101230300221
11581521847
122a4037365
13167b72cc7
14b957a1d3
15730235eb
hex4954e43d

1230300221 has 8 divisors (see below), whose sum is σ = 1236578040. Its totient is φ = 1224039168.

The previous prime is 1230300167. The next prime is 1230300223. The reversal of 1230300221 is 1220030321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 161925625 + 1068374596 = 12725^2 + 32686^2 .

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-1230300221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230300196 and 1230300205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230300223) 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, 158585 + ... + 166161.

It is an arithmetic number, because the mean of its divisors is an integer number (154572255).

Almost surely, 21230300221 is an apocalyptic number.

It is an amenable number.

1230300221 is a deficient number, since it is larger than the sum of its proper divisors (6277819).

1230300221 is an equidigital number, since it uses as much as digits as its factorization.

1230300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8383.

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

The square root of 1230300221 is about 35075.6357176887. The cubic root of 1230300221 is about 1071.5284358159.

Adding to 1230300221 its reverse (1220030321), we get a palindrome (2450330542).

The spelling of 1230300221 in words is "one billion, two hundred thirty million, three hundred thousand, two hundred twenty-one".

Divisors: 1 397 409 7577 162373 3008069 3098993 1230300221