1312042219 has 2 divisors, whose sum is σ = 1312042220. Its totient is φ = 1312042218.

The previous prime is 1312042211. The next prime is 1312042243. The reversal of 1312042219 is 9122402131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312042219 - 2³ = 1312042211 is a prime.

It is a super-2 number, since 2×1312042219² = 3442909568876887922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312042193 and 1312042202.

It is not a weakly prime, because it can be changed into another prime (1312042211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656021109 + 656021110.

It is an arithmetic number, because the mean of its divisors is an integer number (656021110).

Almost surely, 2^1312042219 is an apocalyptic number.

1312042219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312042219 is an equidigital number, since it uses as much as digits as its factorization.

1312042219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1312042219 is about 36222.1233364363. The cubic root of 1312042219 is about 1094.7524774300.

The spelling of 1312042219 in words is "one billion, three hundred twelve million, forty-two thousand, two hundred nineteen".