321431433031444 has 24 divisors (see below), whose sum is σ = 566920109292768. Its totient is φ = 159457618357920.

The previous prime is 321431433031439. The next prime is 321431433031451. The reversal of 321431433031444 is 444130334134123.

It is a super-2 number, since 2×321431433031444² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321431433031397 and 321431433031406.

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, 419543167 + ... + 420308614.

It is an arithmetic number, because the mean of its divisors is an integer number (23621671220532).

Almost surely, 2^{321431433031444} is an apocalyptic number.

It is an amenable number.

321431433031444 is a deficient number, since it is larger than the sum of its proper divisors (245488676261324).

321431433031444 is a wasteful number, since it uses less digits than its factorization.

321431433031444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839852535 (or 839852533 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 40.

Adding to 321431433031444 its reverse (444130334134123), we get a palindrome (765561767165567).

The spelling of 321431433031444 in words is "three hundred twenty-one trillion, four hundred thirty-one billion, four hundred thirty-three million, thirty-one thousand, four hundred forty-four".