1320543299 has 2 divisors, whose sum is σ = 1320543300. Its totient is φ = 1320543298.

The previous prime is 1320543281. The next prime is 1320543313. The reversal of 1320543299 is 9923450231.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320543299 - 2¹² = 1320539203 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1320542299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660271649 + 660271650.

It is an arithmetic number, because the mean of its divisors is an integer number (660271650).

Almost surely, 2^1320543299 is an apocalyptic number.

1320543299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320543299 is an equidigital number, since it uses as much as digits as its factorization.

1320543299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 1320543299 is about 36339.2803863808. The cubic root of 1320543299 is about 1097.1117893339. Note that the first 3 decimals are identical.

The spelling of 1320543299 in words is "one billion, three hundred twenty million, five hundred forty-three thousand, two hundred ninety-nine".