1320100447 has 2 divisors, whose sum is σ = 1320100448. Its totient is φ = 1320100446.

The previous prime is 1320100403. The next prime is 1320100469. The reversal of 1320100447 is 7440010231.

It is an a-pointer prime, because the next prime (1320100469) can be obtained adding 1320100447 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320100447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320100147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660050223 + 660050224.

It is an arithmetic number, because the mean of its divisors is an integer number (660050224).

Almost surely, 2^1320100447 is an apocalyptic number.

1320100447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320100447 is an equidigital number, since it uses as much as digits as its factorization.

1320100447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1320100447 is about 36333.1865792143. The cubic root of 1320100447 is about 1096.9891346476.

Adding to 1320100447 its reverse (7440010231), we get a palindrome (8760110678).

The spelling of 1320100447 in words is "one billion, three hundred twenty million, one hundred thousand, four hundred forty-seven".