13481287 has 2 divisors, whose sum is σ = 13481288. Its totient is φ = 13481286.

The previous prime is 13481269. The next prime is 13481309. The reversal of 13481287 is 78218431.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13481287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13481207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6740643 + 6740644.

It is an arithmetic number, because the mean of its divisors is an integer number (6740644).

Almost surely, 2^13481287 is an apocalyptic number.

13481287 is a deficient number, since it is larger than the sum of its proper divisors (1).

13481287 is an equidigital number, since it uses as much as digits as its factorization.

13481287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 34.

The square root of 13481287 is about 3671.6872143471. The cubic root of 13481287 is about 238.0000882706. Note that the first 4 decimals are identical.

The spelling of 13481287 in words is "thirteen million, four hundred eighty-one thousand, two hundred eighty-seven".