1331144219 has 2 divisors, whose sum is σ = 1331144220. Its totient is φ = 1331144218.

The previous prime is 1331144207. The next prime is 1331144239. The reversal of 1331144219 is 9124411331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1331144219 - 2²⁸ = 1062708763 is a prime.

It is a super-2 number, since 2×1331144219² = 3543889863554239922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331144191 and 1331144200.

It is not a weakly prime, because it can be changed into another prime (1331144239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665572109 + 665572110.

It is an arithmetic number, because the mean of its divisors is an integer number (665572110).

Almost surely, 2^1331144219 is an apocalyptic number.

1331144219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331144219 is an equidigital number, since it uses as much as digits as its factorization.

1331144219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 1331144219 is about 36484.8491705804. The cubic root of 1331144219 is about 1100.0397283172.

The spelling of 1331144219 in words is "one billion, three hundred thirty-one million, one hundred forty-four thousand, two hundred nineteen".