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1230111301 = 2027606863
BaseRepresentation
bin100100101010010…
…0000001001000101
310011201200010110211
41021110200021011
510004402030201
6322021315421
742324526216
oct11124401105
93151603424
101230111301
11581402911
122a3b65b71
13167b08013
14b952b40d
1572ed7651
hex49520245

1230111301 has 4 divisors (see below), whose sum is σ = 1230720192. Its totient is φ = 1229502412.

The previous prime is 1230111283. The next prime is 1230111317. The reversal of 1230111301 is 1031110321.

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: 1031110321 = 1801572521.

It is a cyclic number.

It is not a de Polignac number, because 1230111301 - 27 = 1230111173 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 (1230111331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301405 + ... + 305458.

It is an arithmetic number, because the mean of its divisors is an integer number (307680048).

Almost surely, 21230111301 is an apocalyptic number.

It is an amenable number.

1230111301 is a deficient number, since it is larger than the sum of its proper divisors (608891).

1230111301 is an equidigital number, since it uses as much as digits as its factorization.

1230111301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608890.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1230111301 is about 35072.9425768640. The cubic root of 1230111301 is about 1071.4735864626.

Adding to 1230111301 its reverse (1031110321), we get a palindrome (2261221622).

The spelling of 1230111301 in words is "one billion, two hundred thirty million, one hundred eleven thousand, three hundred one".

Divisors: 1 2027 606863 1230111301