1320615319 has 2 divisors, whose sum is σ = 1320615320. Its totient is φ = 1320615318.

The previous prime is 1320615229. The next prime is 1320615337. The reversal of 1320615319 is 9135160231.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320615319 - 2¹¹ = 1320613271 is a prime.

It is a super-2 number, since 2×1320615319² = 3488049641554943522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320615619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660307659 + 660307660.

It is an arithmetic number, because the mean of its divisors is an integer number (660307660).

Almost surely, 2^1320615319 is an apocalyptic number.

1320615319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320615319 is an equidigital number, since it uses as much as digits as its factorization.

1320615319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 1320615319 is about 36340.2713115904. The cubic root of 1320615319 is about 1097.1317337903.

The spelling of 1320615319 in words is "one billion, three hundred twenty million, six hundred fifteen thousand, three hundred nineteen".