320411144 has 8 divisors (see below), whose sum is σ = 600770910. Its totient is φ = 160205568.

The previous prime is 320411141. The next prime is 320411149. The reversal of 320411144 is 441114023.

It can be written as a sum of positive squares in only one way, i.e., 244547044 + 75864100 = 15638^2 + 8710^2 .

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 (320411141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20025689 + ... + 20025704.

Almost surely, 2^320411144 is an apocalyptic number.

It is an amenable number.

320411144 is a deficient number, since it is larger than the sum of its proper divisors (280359766).

320411144 is a wasteful number, since it uses less digits than its factorization.

320411144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40051399 (or 40051395 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 320411144 is about 17900.0319552787. The cubic root of 320411144 is about 684.2831892824.

Adding to 320411144 its reverse (441114023), we get a palindrome (761525167).

The spelling of 320411144 in words is "three hundred twenty million, four hundred eleven thousand, one hundred forty-four".