1331224019 has 2 divisors, whose sum is σ = 1331224020. Its totient is φ = 1331224018.

The previous prime is 1331224007. The next prime is 1331224159. The reversal of 1331224019 is 9104221331.

It is a weak prime.

It is an emirp because it is prime and its reverse (9104221331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331224019 is a prime.

It is a super-2 number, since 2×1331224019² = 3544314777525024722, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1331224319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665612009 + 665612010.

It is an arithmetic number, because the mean of its divisors is an integer number (665612010).

Almost surely, 2^1331224019 is an apocalyptic number.

1331224019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331224019 is an equidigital number, since it uses as much as digits as its factorization.

1331224019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1331224019 is about 36485.9427588215. The cubic root of 1331224019 is about 1100.0617097612.

The spelling of 1331224019 in words is "one billion, three hundred thirty-one million, two hundred twenty-four thousand, nineteen".