321031031144 has 8 divisors (see below), whose sum is σ = 601933183410. Its totient is φ = 160515515568.

The previous prime is 321031031141. The next prime is 321031031213. The reversal of 321031031144 is 441130130123.

It can be written as a sum of positive squares in only one way, i.e., 295216182244 + 25814848900 = 543338^2 + 160670^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (321031031141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20064439439 + ... + 20064439454.

Almost surely, 2^321031031144 is an apocalyptic number.

It is an amenable number.

321031031144 is a deficient number, since it is larger than the sum of its proper divisors (280902152266).

321031031144 is a wasteful number, since it uses less digits than its factorization.

321031031144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40128878899 (or 40128878895 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 321031031144 its reverse (441130130123), we get a palindrome (762161161267).

The spelling of 321031031144 in words is "three hundred twenty-one billion, thirty-one million, thirty-one thousand, one hundred forty-four".