320321332 has 6 divisors (see below), whose sum is σ = 560562338. Its totient is φ = 160160664.

The previous prime is 320321317. The next prime is 320321333. The reversal of 320321332 is 233123023.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 188622756 + 131698576 = 13734^2 + 11476^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320321333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40040163 + ... + 40040170.

Almost surely, 2^320321332 is an apocalyptic number.

It is an amenable number.

320321332 is a deficient number, since it is larger than the sum of its proper divisors (240241006).

320321332 is a wasteful number, since it uses less digits than its factorization.

320321332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80080337 (or 80080335 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 320321332 is about 17897.5230688495. The cubic root of 320321332 is about 684.2192479100.

Adding to 320321332 its reverse (233123023), we get a palindrome (553444355).

It can be divided in two parts, 32032 and 1332, that multiplied together give a palindrome (42666624).

The spelling of 320321332 in words is "three hundred twenty million, three hundred twenty-one thousand, three hundred thirty-two".