1305971 has 2 divisors, whose sum is σ = 1305972. Its totient is φ = 1305970.

The previous prime is 1305961. The next prime is 1306001. The reversal of 1305971 is 1795031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1305971 - 2⁶ = 1305907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1305971.

It is not a weakly prime, because it can be changed into another prime (1305961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652985 + 652986.

It is an arithmetic number, because the mean of its divisors is an integer number (652986).

2^1305971 is an apocalyptic number.

1305971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305971 is an equidigital number, since it uses as much as digits as its factorization.

1305971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 1305971 is about 1142.7908820077. The cubic root of 1305971 is about 109.3061281789.

The spelling of 1305971 in words is "one million, three hundred five thousand, nine hundred seventy-one".