321440442324 has 24 divisors (see below), whose sum is σ = 750147515040. Its totient is φ = 107129697504.

The previous prime is 321440442293. The next prime is 321440442341. The reversal of 321440442324 is 423244044123.

It is a super-2 number, since 2×321440442324² (a number of 24 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, 2061214 + ... + 2211669.

It is an arithmetic number, because the mean of its divisors is an integer number (31256146460).

Almost surely, 2^321440442324 is an apocalyptic number.

It is an amenable number.

321440442324 is an abundant number, since it is smaller than the sum of its proper divisors (428707072716).

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

321440442324 is a wasteful number, since it uses less digits than its factorization.

321440442324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279159 (or 4279157 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 321440442324 its reverse (423244044123), we get a palindrome (744684486447).

The spelling of 321440442324 in words is "three hundred twenty-one billion, four hundred forty million, four hundred forty-two thousand, three hundred twenty-four".