321128945236 has 12 divisors (see below), whose sum is σ = 613064350080. Its totient is φ = 145967702360.

The previous prime is 321128945191. The next prime is 321128945237. The reversal of 321128945236 is 632549821123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321128945237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3649192516 + ... + 3649192603.

It is an arithmetic number, because the mean of its divisors is an integer number (51088695840).

Almost surely, 2^321128945236 is an apocalyptic number.

It is an amenable number.

321128945236 is a deficient number, since it is larger than the sum of its proper divisors (291935404844).

321128945236 is a wasteful number, since it uses less digits than its factorization.

321128945236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7298385134 (or 7298385132 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The spelling of 321128945236 in words is "three hundred twenty-one billion, one hundred twenty-eight million, nine hundred forty-five thousand, two hundred thirty-six".