1320430340231 has 16 divisors (see below), whose sum is σ = 1328897197056. Its totient is φ = 1311997500000.

The previous prime is 1320430340219. The next prime is 1320430340263.

1320430340231 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320430340231 is a prime.

It is a super-2 number, since 2×1320430340231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320430340231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320430340291) 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 15 ways as a sum of consecutive naturals, for example, 133358381 + ... + 133368281.

It is an arithmetic number, because the mean of its divisors is an integer number (83056074816).

Almost surely, 2^{1320430340231} is an apocalyptic number.

1320430340231 is a deficient number, since it is larger than the sum of its proper divisors (8466856825).

1320430340231 is an equidigital number, since it uses as much as digits as its factorization.

1320430340231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11534.

The product of its (nonzero) digits is 5184, while the sum is 26.

It can be divided in two parts, 1320430 and 340231, that added together give a palindrome (1660661).

The spelling of 1320430340231 in words is "one trillion, three hundred twenty billion, four hundred thirty million, three hundred forty thousand, two hundred thirty-one".