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1224441031 = 1117103151421
BaseRepresentation
bin100100011111011…
…0111110011000111
310011100000001022211
41020332313303013
510001424103111
6321300004251
742225401632
oct11076676307
93140001284
101224441031
1157918a740
122a2090687
131668a1128
14b8892c19
1572767521
hex48fb7cc7

1224441031 has 32 divisors (see below), whose sum is σ = 1440930816. Its totient is φ = 1028160000.

The previous prime is 1224440989. The next prime is 1224441047. The reversal of 1224441031 is 1301444221.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2k-1224441031 is a prime.

It is a super-2 number, since 2×12244410312 = 2998511676792685922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224440993 and 1224441011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224441091) 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 31 ways as a sum of consecutive naturals, for example, 2908201 + ... + 2908621.

It is an arithmetic number, because the mean of its divisors is an integer number (45029088).

Almost surely, 21224441031 is an apocalyptic number.

1224441031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1224441031 is a deficient number, since it is larger than the sum of its proper divisors (216489785).

1224441031 is a wasteful number, since it uses less digits than its factorization.

1224441031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1224441031 is about 34992.0138174413. The cubic root of 1224441031 is about 1069.8247102726.

Adding to 1224441031 its reverse (1301444221), we get a palindrome (2525885252).

The spelling of 1224441031 in words is "one billion, two hundred twenty-four million, four hundred forty-one thousand, thirty-one".

Divisors: 1 11 17 103 151 187 421 1133 1661 1751 2567 4631 7157 15553 19261 28237 43363 63571 78727 171083 264401 476993 699281 737171 1080707 2908411 6547813 8108881 11887777 72025943 111312821 1224441031