1321323431302 has 16 divisors (see below), whose sum is σ = 2265152682240. Its totient is φ = 566274770568.

The previous prime is 1321323431273. The next prime is 1321323431339. The reversal of 1321323431302 is 2031343231231.

It is a super-2 number, since 2×1321323431302² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 777393 + ... + 1801939.

It is an arithmetic number, because the mean of its divisors is an integer number (141572042640).

Almost surely, 2^{1321323431302} is an apocalyptic number.

1321323431302 is a deficient number, since it is larger than the sum of its proper divisors (943829250938).

1321323431302 is a wasteful number, since it uses less digits than its factorization.

1321323431302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116675.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 1321323431302 its reverse (2031343231231), we get a palindrome (3352666662533).

The spelling of 1321323431302 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-three million, four hundred thirty-one thousand, three hundred two".