321232012432 has 20 divisors (see below), whose sum is σ = 622423501756. Its totient is φ = 160606592640.

The previous prime is 321232012421. The next prime is 321232012457. The reversal of 321232012432 is 234210232123.

It can be written as a sum of positive squares in 2 ways, for example, as 182264101776 + 138967910656 = 426924^2 + 372784^2 .

It is a super-2 number, since 2×321232012432² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321232012397 and 321232012406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302619 + ... + 856762.

Almost surely, 2^321232012432 is an apocalyptic number.

It is an amenable number.

321232012432 is a deficient number, since it is larger than the sum of its proper divisors (301191489324).

321232012432 is a wasteful number, since it uses less digits than its factorization.

321232012432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176706 (or 1176700 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 321232012432 its reverse (234210232123), we get a palindrome (555442244555).

The spelling of 321232012432 in words is "three hundred twenty-one billion, two hundred thirty-two million, twelve thousand, four hundred thirty-two".