321313154000 has 40 divisors (see below), whose sum is σ = 776935211208. Its totient is φ = 128525260800.

The previous prime is 321313153979. The next prime is 321313154017. The reversal of 321313154000 is 451313123.

It can be written as a sum of positive squares in 4 ways, for example, as 52528972864 + 268784181136 = 229192^2 + 518444^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80326289 + ... + 80330288.

Almost surely, 2^321313154000 is an apocalyptic number.

It is an amenable number.

321313154000 is an abundant number, since it is smaller than the sum of its proper divisors (455622057208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321313154000 is a wasteful number, since it uses less digits than its factorization.

321313154000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160656600 (or 160656584 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 321313154000 its reverse (451313123), we get a palindrome (321764467123).

The spelling of 321313154000 in words is "three hundred twenty-one billion, three hundred thirteen million, one hundred fifty-four thousand".