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13480231 = 234091433
BaseRepresentation
bin110011011011…
…000100100111
3221100212101211
4303123010213
511422331411
61200532251
7222402652
oct63330447
927325354
1013480231
117677996
124621087
132a3c98b
141b0c899
1512b4221
hexcdb127

13480231 has 8 divisors (see below), whose sum is σ = 14110560. Its totient is φ = 12853632.

The previous prime is 13480219. The next prime is 13480237. The reversal of 13480231 is 13208431.

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 13480231 - 211 = 13478183 is a prime.

It is a super-2 number, since 2×134802312 = 363433255626722, which 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 (13480237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8691 + ... + 10123.

It is an arithmetic number, because the mean of its divisors is an integer number (1763820).

Almost surely, 213480231 is an apocalyptic number.

13480231 is a deficient number, since it is larger than the sum of its proper divisors (630329).

13480231 is a wasteful number, since it uses less digits than its factorization.

13480231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 13480231 is about 3671.5434084319. The cubic root of 13480231 is about 237.9938738625.

Adding to 13480231 its reverse (13208431), we get a palindrome (26688662).

The spelling of 13480231 in words is "thirteen million, four hundred eighty thousand, two hundred thirty-one".

Divisors: 1 23 409 1433 9407 32959 586097 13480231