321211540330 has 16 divisors (see below), whose sum is σ = 612191406600. Its totient is φ = 120926697472.

The previous prime is 321211540219. The next prime is 321211540367. The reversal of 321211540330 is 33045112123.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 319404695281 + 1806845049 = 565159^2 + 42507^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321211540295 and 321211540304.

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, 944739655 + ... + 944739994.

Almost surely, 2^321211540330 is an apocalyptic number.

321211540330 is a deficient number, since it is larger than the sum of its proper divisors (290979866270).

321211540330 is a wasteful number, since it uses less digits than its factorization.

321211540330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889479673.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 321211540330 its reverse (33045112123), we get a palindrome (354256652453).

The spelling of 321211540330 in words is "three hundred twenty-one billion, two hundred eleven million, five hundred forty thousand, three hundred thirty".