12731471 has 2 divisors, whose sum is σ = 12731472. Its totient is φ = 12731470.

The previous prime is 12731449. The next prime is 12731479. The reversal of 12731471 is 17413721.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12731471 - 2²² = 8537167 is a prime.

It is a super-3 number, since 3×12731471³ (a number of 22 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12731471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12731479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6365735 + 6365736.

It is an arithmetic number, because the mean of its divisors is an integer number (6365736).

Almost surely, 2^12731471 is an apocalyptic number.

12731471 is a deficient number, since it is larger than the sum of its proper divisors (1).

12731471 is an equidigital number, since it uses as much as digits as its factorization.

12731471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 26.

The square root of 12731471 is about 3568.1186919720. The cubic root of 12731471 is about 233.5032134756.

It can be divided in two parts, 1273 and 1471, that added together give a cube (2744 = 14³).

The spelling of 12731471 in words is "twelve million, seven hundred thirty-one thousand, four hundred seventy-one".