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10020000231 = 321113333359
BaseRepresentation
bin10010101010011110…
…10001000111100111
3221212022101202021200
421111033101013213
5131010110001411
64334135213543
7503206411443
oct112517210747
927768352250
1010020000231
11428203552a
121b378172b3
13c38ba0a27
146b0a8b823
153d9a0de56
hex2553d11e7

10020000231 has 6 divisors (see below), whose sum is σ = 14473333680. Its totient is φ = 6680000148.

The previous prime is 10020000217. The next prime is 10020000241. The reversal of 10020000231 is 13200002001.

It is a happy number.

It is not a de Polignac number, because 10020000231 - 218 = 10019738087 is a prime.

It is a super-2 number, since 2×100200002312 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1113333359 = 10020000231 / (1 + 0 + 0 + 2 + 0 + 0 + 0 + 0 + 2 + 3 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020000241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556666671 + ... + 556666688.

It is an arithmetic number, because the mean of its divisors is an integer number (2412222280).

Almost surely, 210020000231 is an apocalyptic number.

10020000231 is a deficient number, since it is larger than the sum of its proper divisors (4453333449).

10020000231 is a wasteful number, since it uses less digits than its factorization.

10020000231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113333365 (or 1113333362 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 10020000231 its reverse (13200002001), we get a palindrome (23220002232).

The spelling of 10020000231 in words is "ten billion, twenty million, two hundred thirty-one", and thus it is an aban number.

Divisors: 1 3 9 1113333359 3340000077 10020000231