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12763231 = 131951673
BaseRepresentation
bin110000101100…
…000001011111
3220000102212021
4300230001133
511231410411
61133321011
7213325405
oct60540137
926012767
1012763231
117228228
124336167
13284b510
1419a3475
1511c1a71
hexc2c05f

12763231 has 8 divisors (see below), whose sum is σ = 14468720. Its totient is φ = 11161152.

The previous prime is 12763211. The next prime is 12763241. The reversal of 12763231 is 13236721.

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 12763231 - 219 = 12238943 is a prime.

It is a super-2 number, since 2×127632312 = 325800131118722, 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 = 12763196 and 12763205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12763211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25590 + ... + 26083.

It is an arithmetic number, because the mean of its divisors is an integer number (1808590).

Almost surely, 212763231 is an apocalyptic number.

12763231 is a deficient number, since it is larger than the sum of its proper divisors (1705489).

12763231 is a wasteful number, since it uses less digits than its factorization.

12763231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51705.

The product of its digits is 1512, while the sum is 25.

The square root of 12763231 is about 3572.5664444486. The cubic root of 12763231 is about 233.6972183914.

Adding to 12763231 its reverse (13236721), we get a palindrome (25999952).

It can be divided in two parts, 1276 and 3231, that multiplied together give a triangular number (4122756 = T2871).

The spelling of 12763231 in words is "twelve million, seven hundred sixty-three thousand, two hundred thirty-one".

Divisors: 1 13 19 247 51673 671749 981787 12763231