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123444304331 = 1941158465089
BaseRepresentation
bin111001011110111011…
…0101001100111001011
3102210122001020101210112
41302331312221213023
54010303220214311
6132413131504535
711630031162665
oct1627566514713
9383561211715
10123444304331
1148397100a27
121bb112b814b
13b843952c7a
145d90967535
15332756028b
hex1cbdda99cb

123444304331 has 8 divisors (see below), whose sum is σ = 133110675600. Its totient is φ = 114094863360.

The previous prime is 123444304303. The next prime is 123444304343. The reversal of 123444304331 is 133403444321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-123444304331 is a prime.

It is a super-2 number, since 2×1234443043312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123444304351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79231766 + ... + 79233323.

It is an arithmetic number, because the mean of its divisors is an integer number (16638834450).

Almost surely, 2123444304331 is an apocalyptic number.

123444304331 is a deficient number, since it is larger than the sum of its proper divisors (9666371269).

123444304331 is a wasteful number, since it uses less digits than its factorization.

123444304331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158465149.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 123444304331 its reverse (133403444321), we get a palindrome (256847748652).

The spelling of 123444304331 in words is "one hundred twenty-three billion, four hundred forty-four million, three hundred four thousand, three hundred thirty-one".

Divisors: 1 19 41 779 158465089 3010836691 6497068649 123444304331