321213420231040 has 64 divisors (see below), whose sum is σ = 767903637060000. Its totient is φ = 128484898873344.

The previous prime is 321213420231023. The next prime is 321213420231059. The reversal of 321213420231040 is 40132024312123.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×321213420231040² (a number of 30 digits) contains 22 as substring.

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, 213708061 + ... + 215205859.

Almost surely, 2^{321213420231040} is an apocalyptic number.

It is an amenable number.

321213420231040 is an abundant number, since it is smaller than the sum of its proper divisors (446690216828960).

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

321213420231040 is a wasteful number, since it uses less digits than its factorization.

321213420231040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832907 (or 1832895 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 321213420231040 its reverse (40132024312123), we get a palindrome (361345444543163).

The spelling of 321213420231040 in words is "three hundred twenty-one trillion, two hundred thirteen billion, four hundred twenty million, two hundred thirty-one thousand, forty".