1320911071 has 2 divisors, whose sum is σ = 1320911072. Its totient is φ = 1320911070.

The previous prime is 1320911029. The next prime is 1320911083. The reversal of 1320911071 is 1701190231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320911071 - 2¹³ = 1320902879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320911021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660455535 + 660455536.

It is an arithmetic number, because the mean of its divisors is an integer number (660455536).

Almost surely, 2^1320911071 is an apocalyptic number.

1320911071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320911071 is an equidigital number, since it uses as much as digits as its factorization.

1320911071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 1320911071 is about 36344.3402884135. The cubic root of 1320911071 is about 1097.2136286162.

The spelling of 1320911071 in words is "one billion, three hundred twenty million, nine hundred eleven thousand, seventy-one".