1312020019 has 2 divisors, whose sum is σ = 1312020020. Its totient is φ = 1312020018.

The previous prime is 1312019987. The next prime is 1312020023. The reversal of 1312020019 is 9100202131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312020019 - 2⁵ = 1312019987 is a prime.

It is a super-2 number, since 2×1312020019² = 3442793060513520722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312019978 and 1312020005.

It is not a weakly prime, because it can be changed into another prime (1312020079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656010009 + 656010010.

It is an arithmetic number, because the mean of its divisors is an integer number (656010010).

Almost surely, 2^1312020019 is an apocalyptic number.

1312020019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312020019 is an equidigital number, since it uses as much as digits as its factorization.

1312020019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1312020019 is about 36221.8168925856. The cubic root of 1312020019 is about 1094.7463029229.

The spelling of 1312020019 in words is "one billion, three hundred twelve million, twenty thousand, nineteen".