1321132343 has 2 divisors, whose sum is σ = 1321132344. Its totient is φ = 1321132342.

The previous prime is 1321132333. The next prime is 1321132361. The reversal of 1321132343 is 3432311231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1321132343 - 2¹⁴ = 1321115959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321132313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660566171 + 660566172.

It is an arithmetic number, because the mean of its divisors is an integer number (660566172).

Almost surely, 2^1321132343 is an apocalyptic number.

1321132343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321132343 is an equidigital number, since it uses as much as digits as its factorization.

1321132343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 23.

The square root of 1321132343 is about 36347.3842662715. The cubic root of 1321132343 is about 1097.2748916601.

Adding to 1321132343 its reverse (3432311231), we get a palindrome (4753443574).

It can be divided in two parts, 13211 and 32343, that added together give a palindrome (45554).

The spelling of 1321132343 in words is "one billion, three hundred twenty-one million, one hundred thirty-two thousand, three hundred forty-three".