1321232347 has 2 divisors, whose sum is σ = 1321232348. Its totient is φ = 1321232346.

The previous prime is 1321232321. The next prime is 1321232387. The reversal of 1321232347 is 7432321231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321232347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321232387) 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, 660616173 + 660616174.

It is an arithmetic number, because the mean of its divisors is an integer number (660616174).

Almost surely, 2^1321232347 is an apocalyptic number.

1321232347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321232347 is an equidigital number, since it uses as much as digits as its factorization.

1321232347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 28.

The square root of 1321232347 is about 36348.7599100712. The cubic root of 1321232347 is about 1097.3025772815.

Adding to 1321232347 its reverse (7432321231), we get a palindrome (8753553578).

It can be divided in two parts, 13212323 and 47, that added together give a triangular number (13212370 = T₅₁₄₀).

The spelling of 1321232347 in words is "one billion, three hundred twenty-one million, two hundred thirty-two thousand, three hundred forty-seven".