321425612 has 12 divisors (see below), whose sum is σ = 562636200. Its totient is φ = 160672416.

The previous prime is 321425567. The next prime is 321425617. The reversal of 321425612 is 216524123.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (321425617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14423 + ... + 29169.

It is an arithmetic number, because the mean of its divisors is an integer number (46886350).

Almost surely, 2^321425612 is an apocalyptic number.

It is an amenable number.

321425612 is a deficient number, since it is larger than the sum of its proper divisors (241210588).

321425612 is a wasteful number, since it uses less digits than its factorization.

321425612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20200 (or 20198 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 321425612 is about 17928.3466053064. The cubic root of 321425612 is about 685.0046082770.

Adding to 321425612 its reverse (216524123), we get a palindrome (537949735).

The spelling of 321425612 in words is "three hundred twenty-one million, four hundred twenty-five thousand, six hundred twelve".