321131233130220 has 36 divisors (see below), whose sum is σ = 974098073828880. Its totient is φ = 85634995501344.

The previous prime is 321131233130189. The next prime is 321131233130287. The reversal of 321131233130220 is 22031332131123.

321131233130220 is a `hidden beast` number, since 3 + 2 + 1 + 1 + 3 + 1 + 2 + 331 + 302 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 892031202960 + ... + 892031203319.

It is an arithmetic number, because the mean of its divisors is an integer number (27058279828580).

Almost surely, 2^{321131233130220} is an apocalyptic number.

321131233130220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321131233130220 is an abundant number, since it is smaller than the sum of its proper divisors (652966840698660).

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

321131233130220 is a wasteful number, since it uses less digits than its factorization.

321131233130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784062406294 (or 1784062406289 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 321131233130220 its reverse (22031332131123), we get a palindrome (343162565261343).

The spelling of 321131233130220 in words is "three hundred twenty-one trillion, one hundred thirty-one billion, two hundred thirty-three million, one hundred thirty thousand, two hundred twenty".