320221424431432 has 32 divisors (see below), whose sum is σ = 601249485929400. Its totient is φ = 159888356697600.

The previous prime is 320221424431387. The next prime is 320221424431459. The reversal of 320221424431432 is 234134424122023.

It can be written as a sum of positive squares in 4 ways, for example, as 249398192183716 + 70823232247716 = 15792346^2 + 8415654^2 .

It is a junction number, because it is equal to n+sod(n) for n = 320221424431391 and 320221424431400.

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, 11907694 + ... + 27968482.

Almost surely, 2^{320221424431432} is an apocalyptic number.

It is an amenable number.

320221424431432 is a deficient number, since it is larger than the sum of its proper divisors (281028061497968).

320221424431432 is a wasteful number, since it uses less digits than its factorization.

320221424431432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16064257 (or 16064253 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 320221424431432 its reverse (234134424122023), we get a palindrome (554355848553455).

The spelling of 320221424431432 in words is "three hundred twenty trillion, two hundred twenty-one billion, four hundred twenty-four million, four hundred thirty-one thousand, four hundred thirty-two".