321213404031420 has 48 divisors (see below), whose sum is σ = 899398357327008. Its totient is φ = 85656829071360.

The previous prime is 321213404031301. The next prime is 321213404031431. The reversal of 321213404031420 is 24130404312123.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96007540 + ... + 99296900.

It is an arithmetic number, because the mean of its divisors is an integer number (18737465777646).

Almost surely, 2^{321213404031420} is an apocalyptic number.

321213404031420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321213404031420 is an abundant number, since it is smaller than the sum of its proper divisors (578184953295588).

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

321213404031420 is a wasteful number, since it uses less digits than its factorization.

321213404031420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4916910 (or 4916908 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 321213404031420 its reverse (24130404312123), we get a palindrome (345343808343543).

The spelling of 321213404031420 in words is "three hundred twenty-one trillion, two hundred thirteen billion, four hundred four million, thirty-one thousand, four hundred twenty".