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10020013231 = 171933053951
BaseRepresentation
bin10010101010011110…
…10100010010101111
3221212022102102010011
421111033110102233
5131010110410411
64334135354051
7503206464364
oct112517242257
927768372104
1010020013231
114282044278
121b37822927
13c38ba6917
146b0a9246b
153d9a12c21
hex2553d44af

10020013231 has 8 divisors (see below), whose sum is σ = 10664400384. Its totient is φ = 9381734400.

The previous prime is 10020013229. The next prime is 10020013259. The reversal of 10020013231 is 13231002001.

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 10020013231 - 21 = 10020013229 is a prime.

It is a super-2 number, since 2×100200132312 (a number of 21 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 (10020016231) 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, 1523695 + ... + 1530256.

It is an arithmetic number, because the mean of its divisors is an integer number (1333050048).

Almost surely, 210020013231 is an apocalyptic number.

10020013231 is a deficient number, since it is larger than the sum of its proper divisors (644387153).

10020013231 is a wasteful number, since it uses less digits than its factorization.

10020013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054161.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 10020013231 its reverse (13231002001), we get a palindrome (23251015232).

The spelling of 10020013231 in words is "ten billion, twenty million, thirteen thousand, two hundred thirty-one".

Divisors: 1 17 193 3281 3053951 51917167 589412543 10020013231