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30444131023 = 1071491909561
BaseRepresentation
bin11100010110100111…
…001001001011001111
32220120201000002121021
4130112213021023033
5444322144143043
621552535215011
72125301562325
oct342647111317
986521002537
1030444131023
1111a02a11269
125a97817467
132b423b8617
14168b419d15
15bd2b083ed
hex7169c92cf

30444131023 has 8 divisors (see below), whose sum is σ = 30934904400. Its totient is φ = 29957177280.

The previous prime is 30444130963. The next prime is 30444131027. The reversal of 30444131023 is 32013144403.

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 30444131023 - 29 = 30444130511 is a prime.

It is a super-2 number, since 2×304441310232 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30444131027) 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 7 ways as a sum of consecutive naturals, for example, 938838 + ... + 970723.

It is an arithmetic number, because the mean of its divisors is an integer number (3866863050).

Almost surely, 230444131023 is an apocalyptic number.

30444131023 is a deficient number, since it is larger than the sum of its proper divisors (490773377).

30444131023 is a wasteful number, since it uses less digits than its factorization.

30444131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909817.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 30444131023 its reverse (32013144403), we get a palindrome (62457275426).

The spelling of 30444131023 in words is "thirty billion, four hundred forty-four million, one hundred thirty-one thousand, twenty-three".

Divisors: 1 107 149 15943 1909561 204323027 284524589 30444131023