1312220419 has 2 divisors, whose sum is σ = 1312220420. Its totient is φ = 1312220418.

The previous prime is 1312220407. The next prime is 1312220423. The reversal of 1312220419 is 9140222131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312220419 - 2⁷ = 1312220291 is a prime.

It is a super-2 number, since 2×1312220419² = 3443844856081071122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312220393 and 1312220402.

It is not a weakly prime, because it can be changed into another prime (1312220719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656110209 + 656110210.

It is an arithmetic number, because the mean of its divisors is an integer number (656110210).

Almost surely, 2^1312220419 is an apocalyptic number.

1312220419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312220419 is an equidigital number, since it uses as much as digits as its factorization.

1312220419 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1312220419 is about 36224.5830755856. The cubic root of 1312220419 is about 1094.8020378424.

The spelling of 1312220419 in words is "one billion, three hundred twelve million, two hundred twenty thousand, four hundred nineteen".