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1144330031 = 1388399689
BaseRepresentation
bin100010000110101…
…0001011100101111
32221202020222200202
41010031101130233
54320422030111
6305314544115
740233434105
oct10415213457
92852228622
101144330031
11537a430a9
1227b29803b
13153102380
14abd9bc75
156a6e0b3b
hex4435172f

1144330031 has 8 divisors (see below), whose sum is σ = 1233763440. Its totient is φ = 1055097792.

The previous prime is 1144329997. The next prime is 1144330037. The reversal of 1144330031 is 1300334411.

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 1144330031 - 214 = 1144313647 is a prime.

It is a super-2 number, since 2×11443300312 = 2618982439696921922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1144329985 and 1144330012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144330037) 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, 38366 + ... + 61323.

It is an arithmetic number, because the mean of its divisors is an integer number (154220430).

Almost surely, 21144330031 is an apocalyptic number.

1144330031 is a deficient number, since it is larger than the sum of its proper divisors (89433409).

1144330031 is an equidigital number, since it uses as much as digits as its factorization.

1144330031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100585.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1144330031 is about 33827.9474842917. The cubic root of 1144330031 is about 1045.9648700038.

Adding to 1144330031 its reverse (1300334411), we get a palindrome (2444664442).

The spelling of 1144330031 in words is "one billion, one hundred forty-four million, three hundred thirty thousand, thirty-one".

Divisors: 1 13 883 11479 99689 1295957 88025387 1144330031