1320232313 has 2 divisors, whose sum is σ = 1320232314. Its totient is φ = 1320232312.

The previous prime is 1320232297. The next prime is 1320232343. The reversal of 1320232313 is 3132320231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1320014224 + 218089 = 36332^2 + 467^2 .

It is an emirp because it is prime and its reverse (3132320231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1320232313 - 2⁴ = 1320232297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320232343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660116156 + 660116157.

It is an arithmetic number, because the mean of its divisors is an integer number (660116157).

Almost surely, 2^1320232313 is an apocalyptic number.

It is an amenable number.

1320232313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320232313 is an equidigital number, since it uses as much as digits as its factorization.

1320232313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1320232313 is about 36335.0012109536. The cubic root of 1320232313 is about 1097.0256598361.

Adding to 1320232313 its reverse (3132320231), we get a palindrome (4452552544).

The spelling of 1320232313 in words is "one billion, three hundred twenty million, two hundred thirty-two thousand, three hundred thirteen".