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1230303101 = 5472249183
BaseRepresentation
bin100100101010100…
…1110111101111101
310011202000212120112
41021111032331331
510004424144401
6322025355405
742326255336
oct11125167575
93152025515
101230303101
11581523a25
122a4038b65
13167b74401
14b957b28d
15730243bb
hex4954ef7d

1230303101 has 4 divisors (see below), whose sum is σ = 1232552832. Its totient is φ = 1228053372.

The previous prime is 1230303079. The next prime is 1230303133. The reversal of 1230303101 is 1013030321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1013030321 = 6353159457.

It is a cyclic number.

It is not a de Polignac number, because 1230303101 - 26 = 1230303037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230303001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1124045 + ... + 1125138.

It is an arithmetic number, because the mean of its divisors is an integer number (308138208).

Almost surely, 21230303101 is an apocalyptic number.

It is an amenable number.

1230303101 is a deficient number, since it is larger than the sum of its proper divisors (2249731).

1230303101 is an equidigital number, since it uses as much as digits as its factorization.

1230303101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249730.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1230303101 is about 35075.6767718030. The cubic root of 1230303101 is about 1071.5292719261.

Adding to 1230303101 its reverse (1013030321), we get a palindrome (2243333422).

The spelling of 1230303101 in words is "one billion, two hundred thirty million, three hundred three thousand, one hundred one".

Divisors: 1 547 2249183 1230303101