1312547 has 2 divisors, whose sum is σ = 1312548. Its totient is φ = 1312546.

The previous prime is 1312543. The next prime is 1312559. The reversal of 1312547 is 7452131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312547 - 2² = 1312543 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1312543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656273 + 656274.

It is an arithmetic number, because the mean of its divisors is an integer number (656274).

2^1312547 is an apocalyptic number.

1312547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312547 is an equidigital number, since it uses as much as digits as its factorization.

1312547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 23.

The square root of 1312547 is about 1145.6644360370. The cubic root of 1312547 is about 109.4892853857.

Adding to 1312547 its reverse (7452131), we get a palindrome (8764678).

The spelling of 1312547 in words is "one million, three hundred twelve thousand, five hundred forty-seven".