12951287 has 2 divisors, whose sum is σ = 12951288. Its totient is φ = 12951286.

The previous prime is 12951283. The next prime is 12951307. The reversal of 12951287 is 78215921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12951287 - 2² = 12951283 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12951283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6475643 + 6475644.

It is an arithmetic number, because the mean of its divisors is an integer number (6475644).

Almost surely, 2^12951287 is an apocalyptic number.

12951287 is a deficient number, since it is larger than the sum of its proper divisors (1).

12951287 is an equidigital number, since it uses as much as digits as its factorization.

12951287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 35.

The square root of 12951287 is about 3598.7896576488. The cubic root of 12951287 is about 234.8394074073.

The spelling of 12951287 in words is "twelve million, nine hundred fifty-one thousand, two hundred eighty-seven".