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13202233231 = 113313625991
BaseRepresentation
bin11000100101110101…
…00001011110001111
31021002002022221022011
430102322201132033
5204014232430411
610022013402051
7645110062615
oct142272413617
937062287264
1013202233231
115665353260
122685499327
13132525b635
148d356d6b5
1552409cc21
hex312ea178f

13202233231 has 8 divisors (see below), whose sum is σ = 14445952128. Its totient is φ = 11965767000.

The previous prime is 13202233229. The next prime is 13202233279. The reversal of 13202233231 is 13233220231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13202233231 - 21 = 13202233229 is a prime.

It is a super-2 number, since 2×132022332312 (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 (13202236231) 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, 1809355 + ... + 1816636.

It is an arithmetic number, because the mean of its divisors is an integer number (1805744016).

Almost surely, 213202233231 is an apocalyptic number.

13202233231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13202233231 is a deficient number, since it is larger than the sum of its proper divisors (1243718897).

13202233231 is a wasteful number, since it uses less digits than its factorization.

13202233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626333.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 13202233231 its reverse (13233220231), we get a palindrome (26435453462).

The spelling of 13202233231 in words is "thirteen billion, two hundred two million, two hundred thirty-three thousand, two hundred thirty-one".

Divisors: 1 11 331 3641 3625991 39885901 1200203021 13202233231