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10131323231 = 101320931259
BaseRepresentation
bin10010110111101111…
…11011100101011111
3222011001212112201202
421123313323211133
5131222104320411
64353153230115
7506030553341
oct113367734537
928131775652
1010131323231
114329960107
121b68b6233b
13c55c7a323
146c1789291
153e469d83b
hex25bdfb95f

10131323231 has 8 divisors (see below), whose sum is σ = 10235149200. Its totient is φ = 10027566400.

The previous prime is 10131323221. The next prime is 10131323269. The reversal of 10131323231 is 13232313101.

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 10131323231 - 214 = 10131306847 is a prime.

It is a super-2 number, since 2×101313232312 (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 (10131323201) 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, 308480 + ... + 339738.

It is an arithmetic number, because the mean of its divisors is an integer number (1279393650).

Almost surely, 210131323231 is an apocalyptic number.

10131323231 is a deficient number, since it is larger than the sum of its proper divisors (103825969).

10131323231 is a wasteful number, since it uses less digits than its factorization.

10131323231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34569.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 10131323231 its reverse (13232313101), we get a palindrome (23363636332).

The spelling of 10131323231 in words is "ten billion, one hundred thirty-one million, three hundred twenty-three thousand, two hundred thirty-one".

Divisors: 1 101 3209 31259 324109 3157159 100310131 10131323231