1321324031420 has 24 divisors (see below), whose sum is σ = 2774802063264. Its totient is φ = 528525498816.

The previous prime is 1321324031393. The next prime is 1321324031449. The reversal of 1321324031420 is 241304231231.

It is a super-2 number, since 2×1321324031420² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1321324031420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4885049 + ... + 5148431.

It is an arithmetic number, because the mean of its divisors is an integer number (115616752636).

Almost surely, 2^{1321324031420} is an apocalyptic number.

1321324031420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321324031420 is an abundant number, since it is smaller than the sum of its proper divisors (1453478031844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321324031420 is a wasteful number, since it uses less digits than its factorization.

1321324031420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514229 (or 514227 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1321324031420 its reverse (241304231231), we get a palindrome (1562628262651).

The spelling of 1321324031420 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-four million, thirty-one thousand, four hundred twenty".