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13033023231 = 34439806639
BaseRepresentation
bin11000010001101010…
…00010011011111111
31020122021221011211010
430020311002123333
5203142423220411
65553130530303
7640653604164
oct141065023377
936567834733
1013033023231
115588890288
122638896993
1312c9194a87
148b8cc406b
155142c67a6
hex308d426ff

13033023231 has 8 divisors (see below), whose sum is σ = 17416592640. Its totient is φ = 8669067992.

The previous prime is 13033023181. The next prime is 13033023239. The reversal of 13033023231 is 13232033031.

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 13033023231 - 26 = 13033023167 is a prime.

It is a super-2 number, since 2×130330232312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13033023198 and 13033023207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13033023239) 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, 4901991 + ... + 4904648.

It is an arithmetic number, because the mean of its divisors is an integer number (2177074080).

Almost surely, 213033023231 is an apocalyptic number.

13033023231 is a deficient number, since it is larger than the sum of its proper divisors (4383569409).

13033023231 is an equidigital number, since it uses as much as digits as its factorization.

13033023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9807085.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 13033023231 its reverse (13232033031), we get a palindrome (26265056262).

The spelling of 13033023231 in words is "thirteen billion, thirty-three million, twenty-three thousand, two hundred thirty-one".

Divisors: 1 3 443 1329 9806639 29419917 4344341077 13033023231