1320340103431 has 4 divisors (see below), whose sum is σ = 1320368027832. Its totient is φ = 1320312179032.

The previous prime is 1320340103413. The next prime is 1320340103447. The reversal of 1320340103431 is 1343010430231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320340103431 - 2⁵ = 1320340103399 is a prime.

It is a super-2 number, since 2×1320340103431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320340103396 and 1320340103405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320340503431) 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 in 3 ways as a sum of consecutive naturals, for example, 13891156 + ... + 13985881.

It is an arithmetic number, because the mean of its divisors is an integer number (330092006958).

Almost surely, 2^{1320340103431} is an apocalyptic number.

1320340103431 is a deficient number, since it is larger than the sum of its proper divisors (27924401).

1320340103431 is an equidigital number, since it uses as much as digits as its factorization.

1320340103431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27924400.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1320340103431 its reverse (1343010430231), we get a palindrome (2663350533662).

The spelling of 1320340103431 in words is "one trillion, three hundred twenty billion, three hundred forty million, one hundred three thousand, four hundred thirty-one".