321213204431412 has 24 divisors (see below), whose sum is σ = 749497868271936. Its totient is φ = 107071012248768.

The previous prime is 321213204431393. The next prime is 321213204431419. The reversal of 321213204431412 is 214134402312123.

It is a super-3 number, since 3×321213204431412³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321213204431419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21654033 + ... + 33336519.

It is an arithmetic number, because the mean of its divisors is an integer number (31229077844664).

Almost surely, 2^{321213204431412} is an apocalyptic number.

It is an amenable number.

321213204431412 is an abundant number, since it is smaller than the sum of its proper divisors (428284663840524).

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

321213204431412 is a wasteful number, since it uses less digits than its factorization.

321213204431412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13973767 (or 13973765 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 321213204431412 its reverse (214134402312123), we get a palindrome (535347606743535).

The spelling of 321213204431412 in words is "three hundred twenty-one trillion, two hundred thirteen billion, two hundred four million, four hundred thirty-one thousand, four hundred twelve".