1311400219 has 2 divisors, whose sum is σ = 1311400220. Its totient is φ = 1311400218.

The previous prime is 1311400217. The next prime is 1311400267. The reversal of 1311400219 is 9120041131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311400219 - 2¹ = 1311400217 is a prime.

It is a super-2 number, since 2×1311400219² = 3439541068786495922, which contains 22 as substring.

Together with 1311400217, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1311400219.

It is not a weakly prime, because it can be changed into another prime (1311400217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655700109 + 655700110.

It is an arithmetic number, because the mean of its divisors is an integer number (655700110).

Almost surely, 2^1311400219 is an apocalyptic number.

1311400219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311400219 is an equidigital number, since it uses as much as digits as its factorization.

1311400219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1311400219 is about 36213.2602647152. The cubic root of 1311400219 is about 1094.5738892346.

The spelling of 1311400219 in words is "one billion, three hundred eleven million, four hundred thousand, two hundred nineteen".