321431104104440 has 64 divisors (see below), whose sum is σ = 789314361924960. Its totient is φ = 116832614686720.

The previous prime is 321431104104307. The next prime is 321431104104463. The reversal of 321431104104440 is 44401401134123.

It is a super-3 number, since 3×321431104104440³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321431104104397 and 321431104104406.

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, 159696149 + ... + 161696388.

Almost surely, 2^{321431104104440} is an apocalyptic number.

It is an amenable number.

321431104104440 is an abundant number, since it is smaller than the sum of its proper divisors (467883257820520).

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

321431104104440 is a wasteful number, since it uses less digits than its factorization.

321431104104440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321394832 (or 321394828 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 321431104104440 its reverse (44401401134123), we get a palindrome (365832505238563).

The spelling of 321431104104440 in words is "three hundred twenty-one trillion, four hundred thirty-one billion, one hundred four million, one hundred four thousand, four hundred forty".