321012304323420 has 192 divisors, whose sum is σ = 908726575680000. Its totient is φ = 84667779947520.

The previous prime is 321012304323413. The next prime is 321012304323449. The reversal of 321012304323420 is 24323403210123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1365317031 + ... + 1365552129.

It is an arithmetic number, because the mean of its divisors is an integer number (4732950915000).

Almost surely, 2^{321012304323420} is an apocalyptic number.

321012304323420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321012304323420 is an abundant number, since it is smaller than the sum of its proper divisors (587714271356580).

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

321012304323420 is a wasteful number, since it uses less digits than its factorization.

321012304323420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235988 (or 235986 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 321012304323420 its reverse (24323403210123), we get a palindrome (345335707533543).

The spelling of 321012304323420 in words is "three hundred twenty-one trillion, twelve billion, three hundred four million, three hundred twenty-three thousand, four hundred twenty".