1320313433 has 2 divisors, whose sum is σ = 1320313434. Its totient is φ = 1320313432.

The previous prime is 1320313427. The next prime is 1320313451. The reversal of 1320313433 is 3343130231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1320014224 + 299209 = 36332^2 + 547^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320313433 - 2²⁰ = 1319264857 is a prime.

It is a super-2 number, since 2×1320313433² = 3486455122720490978, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320313399 and 1320313408.

It is not a weakly prime, because it can be changed into another prime (1320313733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660156716 + 660156717.

It is an arithmetic number, because the mean of its divisors is an integer number (660156717).

Almost surely, 2^1320313433 is an apocalyptic number.

It is an amenable number.

1320313433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320313433 is an equidigital number, since it uses as much as digits as its factorization.

1320313433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 1320313433 is about 36336.1174728396. The cubic root of 1320313433 is about 1097.0481278260.

Adding to 1320313433 its reverse (3343130231), we get a palindrome (4663443664).

The spelling of 1320313433 in words is "one billion, three hundred twenty million, three hundred thirteen thousand, four hundred thirty-three".