12731288 has 24 divisors (see below), whose sum is σ = 24269700. Its totient is φ = 6260784.

The previous prime is 12731281. The next prime is 12731339. The reversal of 12731288 is 88213721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12731281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91523 + ... + 91661.

Almost surely, 2^12731288 is an apocalyptic number.

It is an amenable number.

12731288 is a deficient number, since it is larger than the sum of its proper divisors (11538412).

12731288 is a wasteful number, since it uses less digits than its factorization.

12731288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 248 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 12731288 is about 3568.0930481141. The cubic root of 12731288 is about 233.5020946918.

The spelling of 12731288 in words is "twelve million, seven hundred thirty-one thousand, two hundred eighty-eight".