1320099971 has 2 divisors, whose sum is σ = 1320099972. Its totient is φ = 1320099970.

The previous prime is 1320099943. The next prime is 1320100003. The reversal of 1320099971 is 1799900231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320099971 - 2²⁶ = 1252991107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320099371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660049985 + 660049986.

It is an arithmetic number, because the mean of its divisors is an integer number (660049986).

Almost surely, 2^1320099971 is an apocalyptic number.

1320099971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320099971 is an equidigital number, since it uses as much as digits as its factorization.

1320099971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 1320099971 is about 36333.1800287286. The cubic root of 1320099971 is about 1096.9890027973.

The spelling of 1320099971 in words is "one billion, three hundred twenty million, ninety-nine thousand, nine hundred seventy-one".