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BaseRepresentation
bin100010000110011…
…1001010110011001
32221202001222021211
41010030321112121
54320410400241
6305312503121
740232543242
oct10414712631
92852058254
101144231321
11537985a22
1227b24aaa1
1315309946c
14abd73cc9
156a6c1781
hex44339599

1144231321 has 8 divisors (see below), whose sum is σ = 1173940488. Its totient is φ = 1114608000.

The previous prime is 1144231313. The next prime is 1144231379. The reversal of 1144231321 is 1231324411.

It can be written as a sum of positive squares in 4 ways, for example, as 356643225 + 787588096 = 18885^2 + 28064^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1144231321 - 23 = 1144231313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1144231292 and 1144231301.

It is not an unprimeable number, because it can be changed into a prime (1144231021) 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, 5991 + ... + 48211.

It is an arithmetic number, because the mean of its divisors is an integer number (146742561).

Almost surely, 21144231321 is an apocalyptic number.

It is an amenable number.

1144231321 is a deficient number, since it is larger than the sum of its proper divisors (29709167).

1144231321 is an equidigital number, since it uses as much as digits as its factorization.

1144231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42923.

The product of its digits is 576, while the sum is 22.

The square root of 1144231321 is about 33826.4884520992. The cubic root of 1144231321 is about 1045.9347941346.

Adding to 1144231321 its reverse (1231324411), we get a palindrome (2375555732).

The spelling of 1144231321 in words is "one billion, one hundred forty-four million, two hundred thirty-one thousand, three hundred twenty-one".