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10005331431 = 33771217881
BaseRepresentation
bin10010101000101110…
…10011110111100111
3221211021210111110210
421110113103313213
5130442331101211
64332452550503
7502640625324
oct112427236747
927737714423
1010005331431
114274826657
121b32922433
13c35b36074
146acb4db4b
153d85b29a6
hex2545d3de7

10005331431 has 24 divisors (see below), whose sum is σ = 13897461232. Its totient is φ = 6398179200.

The previous prime is 10005331409. The next prime is 10005331439. The reversal of 10005331431 is 13413350001.

It is not a de Polignac number, because 10005331431 - 221 = 10003234279 is a prime.

It is a super-2 number, since 2×100053314312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10005331398 and 10005331407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10005331439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 550611 + ... + 568491.

Almost surely, 210005331431 is an apocalyptic number.

10005331431 is a deficient number, since it is larger than the sum of its proper divisors (3892129801).

10005331431 is an equidigital number, since it uses as much as digits as its factorization.

10005331431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18063 (or 17992 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 10005331431 its reverse (13413350001), we get a palindrome (23418681432).

The spelling of 10005331431 in words is "ten billion, five million, three hundred thirty-one thousand, four hundred thirty-one".

Divisors: 1 3 37 71 111 213 2627 5041 7881 15123 17881 53643 186517 559551 661597 1269551 1984791 3808653 46973387 90138121 140920161 270414363 3335110477 10005331431