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13255331 = 19798831
BaseRepresentation
bin110010100100…
…001010100011
3220221102220012
4302210022203
511343132311
61152035135
7220445165
oct62441243
926842805
1013255331
117533a21
124532aab
1329914bb
141a90935
15126c78b
hexca42a3

13255331 has 8 divisors (see below), whose sum is σ = 14131200. Its totient is φ = 12397320.

The previous prime is 13255303. The next prime is 13255351. The reversal of 13255331 is 13355231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13255331 is a prime.

It is a super-2 number, since 2×132553312 = 351407599839122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13255297 and 13255306.

It is not an unprimeable number, because it can be changed into a prime (13255351) 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, 2915 + ... + 5916.

It is an arithmetic number, because the mean of its divisors is an integer number (1766400).

Almost surely, 213255331 is an apocalyptic number.

13255331 is a deficient number, since it is larger than the sum of its proper divisors (875869).

13255331 is an equidigital number, since it uses as much as digits as its factorization.

13255331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8929.

The product of its digits is 1350, while the sum is 23.

The square root of 13255331 is about 3640.7871401663. The cubic root of 13255331 is about 236.6629056688.

The spelling of 13255331 in words is "thirteen million, two hundred fifty-five thousand, three hundred thirty-one".

Divisors: 1 19 79 1501 8831 167789 697649 13255331