1320432402343 has 4 divisors (see below), whose sum is σ = 1320473995048. Its totient is φ = 1320390809640.

The previous prime is 1320432402307. The next prime is 1320432402349. The reversal of 1320432402343 is 3432042340231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320432402343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320432402349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20748696 + ... + 20812237.

It is an arithmetic number, because the mean of its divisors is an integer number (330118498762).

Almost surely, 2^{1320432402343} is an apocalyptic number.

1320432402343 is a deficient number, since it is larger than the sum of its proper divisors (41592705).

1320432402343 is an equidigital number, since it uses as much as digits as its factorization.

1320432402343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41592704.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 1320432402343 its reverse (3432042340231), we get a palindrome (4752474742574).

The spelling of 1320432402343 in words is "one trillion, three hundred twenty billion, four hundred thirty-two million, four hundred two thousand, three hundred forty-three".