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1230403141 = 11210168621
BaseRepresentation
bin100100101010110…
…0111011001000101
310011202012221210201
41021111213121011
510004440400031
6322031450501
742330153112
oct11125473105
93152187721
101230403141
11581592100
122a4086a31
13167baaac6
14b95a5909
1573043d61
hex49567645

1230403141 has 6 divisors (see below), whose sum is σ = 1352426726. Its totient is φ = 1118548200.

The previous prime is 1230403133. The next prime is 1230403151. The reversal of 1230403141 is 1413040321.

It can be written as a sum of positive squares in only one way, i.e., 1097000641 + 133402500 = 33121^2 + 11550^2 .

It is not a de Polignac number, because 1230403141 - 23 = 1230403133 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 (1230403151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5084190 + ... + 5084431.

Almost surely, 21230403141 is an apocalyptic number.

1230403141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1230403141 is a deficient number, since it is larger than the sum of its proper divisors (122023585).

1230403141 is a wasteful number, since it uses less digits than its factorization.

1230403141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10168643 (or 10168632 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1230403141 is about 35077.1028022555. The cubic root of 1230403141 is about 1071.5583143311.

Adding to 1230403141 its reverse (1413040321), we get a palindrome (2643443462).

The spelling of 1230403141 in words is "one billion, two hundred thirty million, four hundred three thousand, one hundred forty-one".

Divisors: 1 11 121 10168621 111854831 1230403141